Outcomes from elective colorectal cancer surgery during the SARS-CoV-2 pandemic

Abstract Aim: This study aimed to describe the change in surgical practice and the impact of SARS-CoV-2 on mortality after surgical resection of colorectal cancer during the initial phases of the SARS-CoV-2 pandemic. Methods: This was an international cohort study of patients undergoing elective resection of colon or rectal cancer without preoperative suspicion of SARS-CoV-2. Centres entered data from their first recorded case of COVID-19 until 19 April 2020. The primary outcome was 30-day mortality. Secondary outcomes included anastomotic leak, postoperative SARS-CoV-2 and a comparison with prepandemic European Society of Coloproctology cohort data. Results: From 2073 patients in 40 countries, 1.3% (27/2073) had a defunctioning stoma and 3.0% (63/2073) had an end stoma instead of an anastomosis only. Thirty-day mortality was 1.8% (38/2073), the incidence of postoperative SARS-CoV-2 was 3.8% (78/2073) and the anastomotic leak rate was 4.9% (86/1738). Mortality was lowest in patients without a leak or SARS-CoV-2 (14/1601, 0.9%) and highest in patients with both a leak and SARS-CoV-2 (5/13, 38.5%). Mortality was independently associated with anastomotic leak (adjusted odds ratio 6.01, 95% confidence interval 2.58–14.06), postoperative SARS-CoV-2 (16.90, 7.86–36.38), male sex (2.46, 1.01–5.93), age >70 years (2.87, 1.32–6.20) and advanced cancer stage (3.43, 1.16–10.21). Compared with prepandemic data, there were fewer anastomotic leaks (4.9% versus 7.7%) and an overall shorter length of stay (6 versus 7 days) but higher mortality (1.7% versus 1.1%). Conclusion: Surgeons need to further mitigate against both SARS-CoV-2 and anastomotic leak when offering surgery during current and future COVID-19 waves based on patient, operative and organizational risks.Appendix 1 Writing group (*denotes joint first authors) Elizabeth Li*, James C. Glasbey*, Dmitri Nepogodiev*, Joana F. F. Simoes*, Omar M. Omar, Mary L. Venn, Jonathan P. Evans, Kaori Futaba, Charles H. Knowles, Ana Minaya-Bravo, Helen Mohan, Manish Chand, Peter Pockney, Salomone Di Saverio, Neil Smart, Abigail Vallance, Dale Vimalachandran, Richard J. W. Wilkin, Aneel Bhangu (Overall guarantor). 2 Statistical analysis Omar M. Omar (Lead statistician), Elizabeth Li, James C. Glasbey, Aneel Bhangu. 3 CovidSurg Operations Committee Kwabena Siaw-Acheampong, Ruth A. Benson, Edward Bywater, Daoud Chaudhry, Brett E. Dawson, Jonathan P. Evans, James C. Glasbey, Rohan R. Gujjuri, Emily Heritage, Conor S. Jones, Sivesh K. Kamarajah, Chetan Khatri, Rachel A. Khaw, James M. Keatley, Andrew Knight, Samuel Lawday, Elizabeth Li, Harvinder S. Mann, Ella J. Marson, Kenneth A. McLean, Siobhan C. Mckay, Emily C. Mills, Dmitri Nepogodiev, Gianluca Pellino, Maria Picciochi, Elliott H. Taylor, Abhinav Tiwari, Joana F. F. Simoes, Isobel M. Trout, Mary L. Venn, Richard J. W. Wilkin, Aneel Bhangu. 4 International Cancer Leads (*denotes specialty principal Investigator) James C. Glasbey (Chair); Colorectal: Neil J. Smart*, Ana Minaya-Bravo*, Jonathan P. Evans, Gaetano Gallo, Susan Moug, Francesco Pata, Peter Pockney, Salomone Di Saverio, Abigail Vallance, Dale Vimalchandran. 5 Dissemination Committee Joana F. F. Simoes (Chair); Tom E. F. Abbott, Sadi Abukhalaf, Michel Adamina, Adesoji O. Ademuyiwa, Arnav Agarwal, Murat Akkulak, Ehab Alameer, Derek Alderson, Felix Alakaloko, Markus Albertsmeiers, Osaid Alser, Muhammad Alshaar, Sattar Alshryda, Alexis P. Arnaud, Knut Magne Augestad, Faris Ayasra, José Azevedo, Brittany K. Bankhead-Kendall, Emma Barlow, David Beard, Ruth A. Benson, Ruth Blanco-Colino, Amanpreet Brar, Ana Minaya-Bravo, Kerry A. Breen, Chris Bretherton, Igor Lima Buarque, Joshua Burke, Edward J. Caruana, Mohammad Chaar, Sohini Chakrabortee, Peter Christensen, Daniel Cox, Moises Cukier, Miguel F. Cunha, Giana H. Davidson, Anant Desai, Salomone Di Saverio, Thomas M. Drake, John G. Edwards, Muhammed Elhadi, Sameh Emile, Shebani Farik, Marco Fiore, J. Edward Fitzgerald, Samuel Ford, Tatiana Garmanova, Gaetano Gallo, Dhruv Ghosh, Gustavo Mendonça Ataíde Gomes, Gustavo Grecinos, Ewen A. Griffiths, Madalegna Gründl, Constantine Halkias, Ewen M. Harrison, Intisar Hisham, Peter J. Hutchinson, Shelley Hwang, Arda Isik, Michael D. Jenkinson, Pascal Jonker, Haytham M. A. Kaafarani, Debby Keller, Angelos Kolias, Schelto Kruijff, Ismail Lawani, Hans Lederhuber, Sezai Leventoglu, Andrey Litvin, Andrew Loehrer, Markus W. Löffler, Maria Aguilera Lorena, Maria Marta Madolo, Piotr Major, Janet Martin, Hassan N. Mashbari, Dennis Mazingi, Symeon Metallidis, Ana Minaya-Bravo, Helen M. Mohan, Rachel Moore, David Moszkowicz, Susan Moug, Joshua S. Ng-Kamstra, Mayaba Maimbo, Ionut Negoi, Milagros Niquen, Faustin Ntirenganya, Maricarmen Olivos, Kacimi Oussama, Oumaima Outani, Marie Dione Parreno-Sacdalanm, Francesco Pata, Carlos Jose Perez Rivera, Thomas D. Pinkney, Willemijn van der Plas, Peter Pockney, Ahmad Qureshi, Dejan Radenkovic, Antonio Ramos-De la Medina, Keith Roberts, April C. Roslani, Martin Rutegård, Irène Santos, Sohei Satoi, Raza Sayyed, Andrew Schache, Andreas A Schnitzbauer, Justina O. Seyi-Olajide, Neil Sharma, Richard Shaw, Sebastian Shu, Kjetil Soreide, Antonino Spinelli, Grant D Stewart, Malin Sund, Sudha Sundar, Stephen Tabiri, Philip Townend, Georgios Tsoulfas, Gabrielle H. van Ramshorst, Raghavan Vidya, Dale Vimalachandran, Oliver J. Warren, Duane Wedderburn, Naomi Wright, EuroSurg, European Society of Coloproctology (ESCP), Global Initiative for Children’s Surgery (GICS), GlobalSurg, GlobalPaedSurg, ItSURG, PTSurg, SpainSurg, Italian Society of Colorectal Surgery (SICCR), Association of Surgeons in Training (ASiT), Irish Surgical Research Collaborative (ISRC), Transatlantic Australasian Retroperitoneal Sarcoma Working Group (TARPSWG), Italian Society of Surgical Oncology (SICO). 6 Collaboratoring authors (*denotes site principal investigators) Argentina: Alurralde C., Caram E. L., Eskinazi D* (Sanatorio 9 De Julio Sa); Badra R., García J.S., Lucchini S.M.* (Sanatorio Allende). Australia: Cecire J., Salindera S.*, Sutherland A. (Coffs Harbour Health Campus); Ahn J.H., Chen S., Gauri N., Jang S., Jia F., Mulligan C., Yang W., Ye G., Zhang H. (Concord Repatriation General Hospital); Moss J.*, Richards T., Thian A., Vo U. G. (Fiona Stanley Hospital); Bagraith K., Chan E., Ho D., Jeyarajan E., Jordan S., Nolan G. J., Von Papen M., Wullschleger M. (Gold Coast University Hospital); Egoroff N., Gani J., Lott N., Pockney P.* (John Hunter Hospital); Phan D., Townend D.* (Lismore Base Hospital); Bong C., Gundara J.* (Logan Hospital); Bowman S.*, Guerra G. R. (Queen Elizabeth II Jubilee Hospital); Dudi-Venkata N. N., Kroon H. M.*, Sammour T. (Royal Adelaide Hospital); Mitchell D.*, Swinson B. (Royal Brisbane and Women’s Hospital). Austria: Messner F., Öfner D.* (Medical University of Innsbruck); Emmanuel K., Grechenig M., Gruber R., Harald M., Öhlberger L., Presl J.*, Wimmer A. (Paracelsus Medical University Salzburg). Barbados: Barker D., Boyce R., Doyle A., Eastmond A., Gill R., O’Shea M., Padmore G.*, Paquette N., Phillips E., St John S., Walkes K. (Queen Elizabeth Hospital). Belgium: Flamey N., Pattyn P.* (Az Delta); Oosterlinck W.*, Van den Eynde J., Van den Eynde R. (Uz Leuven). Bulgaria: Sokolov M.* (University Hospital Alexandrovska). Canada: Boutros M.*, Caminsky N. G., Ghitulescu G. (Jewish General Hospital); Boutros M.*, Demyttenaere S.*, Garfinkle R. (St Mary’s Hospital); Nessim C.*, Stevenson J. (The Ottawa Hospital). Croatia: Bačić G., Karlović D., Kršul D., Zelić M.* (University Hospital Center Rijeka); Bakmaz B., Ćoza I., Dijan E., Katusic Z., Mihanovic J.*, Rakvin I. (Zadar General Hospital). Cyprus: Frantzeskou K., Gouvas N.*, Kokkinos G., Papatheodorou P., Pozotou I., Stavrinidou O., Yiallourou A.* (Nicosia General Hospital). Czechia: Martinek L., Skrovina M.*, Szubota I. (Hospital and Oncological Centre Novy Jicin). Denmark: Ebbehøj A. L., Krarup P., Schlesinger N., Smith H.* (Bispebjerg Hospital). Egypt: Al Sayed M., Ashoush F.*, Elazzazy E., Essam E., Eweda M., Hassan E., Metwalli M., Mourad M., Qatora M. S., Sabry A.*, Samih A., Samir Abdelaal A., Shehata S.*, Shenit K. (Alexandria Main University Hospital); Attia D., Kamal N., Osman N.* (Alexandria Medical Research Institute); Alaa S., Hamza H. M., M. elghazaly S., Mohammed M. M.*, Nageh M. A., Saad M. M.*, Yousof E. A. (Assiut University Hospital); Eldaly A. S.* (El-Menshawy Hospital); Amira G., Sallam I.*, Sherief M., Sherif A. (Misr Cancer Center); Ghaly G.*, Hamdy R., Morsi A., Salem H.*, Sherif G. (National Cancer Institute); Abdeldayem H., Abdelkader Salama I.*, Balabel M., Fayed Y., Sherif A. E.* (National Liver Institute, Menoufia University). Finland: Kauppila J. H.*, Sarjanoja E. (Länsi-Pohja Central Hospital); Helminen O., Huhta H., Kauppila J. H.* (Oulu University Hospital). France: Beyrne C., Jouffret L.*, Marie-Macron L. (Centre Hospitalier Avignon); Lakkis Z.*, Manfredelli S. (CHU Besançon); Chebaro A.*, El Amrani M., Lecolle K., Piessen G.*, Pruvot F. R., Zerbib P. (CHU Lille); Ballouhey Q.*, Barrat B., Taibi A. (Chu Limoges); Bergeat D., Merdrignac A. (CHU Rennes – General Surgery); Le Roy B., Perotto L. O., Scalabre A.* (Chu Saint Etienne); Aimé A., Ezanno A.*, Malgras B. (Hia Begin); Bouche P. A.*, Tzedakis S.* (Hôpital Cochin – APHP); Cotte E., Glehen O., Kepenekian V., Passot G. (Hopital Lyon Sud); D’Urso A., Mutter D., Seeliger B.* (Strasbourg University Hospitals/IHU-Strasbourg); Bonnet S., Denet C., Fuks D., Laforest A., Pourcher G., Seguin-Givelet A.*, Tribillon E. (Institut Mutualiste Montsouris); Duchalais E.* (Nantes University Hospital). Germany: Bork U.*, Fritzmann J., Praetorius C., Weitz J., Welsch T. (Carl-Gustav-Carus University Hospital, TU Dresden); Beyer K., Kamphues C.*, Lauscher J. C., Loch F. N., Schineis C. (Charité University Medicine, Campus Benjamin Franklin); Becker R.*, Jonescheit J. (Heilig-Geist Hospital Bensheim); Pergolini I., Reim D.* (Klinikum Rechts der Isar TUM School of Medicine); Boeker C., Hakami I.*, Mall J.* (KRH Nordstadt-Siloah Hospitals); Albertsmeier M.*, Kappenberger A., Schiergens T., Werner J. (LMU Klinikum Campus Innenstadt); Nowak K.*, Reinhard T.* (Romed Klinikum Rosenheim); Kleeff J., Michalski C., Ronellenfitsch U.* (University Hospital Halle (Saale)); Bertolani E., Königsrainer A.*, Löffler M. W., Quante M.*, Steidle C., Überrück L., Yurttas C. (University Hospital Tuebingen); Izbicki J., Nitschke C., Perez D., Uzunoglu F. G.* (University Medical Center Hamburg–Eppendorf). Greece: Antonakis P., Contis I., Dellaportas D., Gklavas A., Konstadoulakis M., Memos N.*, Papaconstantinou I.*, Polydorou A., Theodosopoulos T., Vezakis A. (Aretaieion Hospital); Antonopoulou M. I., Manatakis D. K.*, Tasis N. (Athens Naval and Veterans Hospital); Arkadopoulos N., Danias N., Economopoulou P., Frountzas M., Kokoropoulos P., Larentzakis A., Michalopoulos N.*, Parasyris S., Selmani J., Sidiropoulos T., Vassiliu P. (Attikon University General Hospital); Bouchagier K.*, Klimopoulos S., Paspaliari D., Stylianidis G. (Evaggelismos General Hospital); Baxevanidou K., Bouliaris K., Chatzikomnitsa P., Efthimiou M., Giaglaras A., Kalfountzos C.*, Koukoulis G., Ntziovara A. M., Petropoulos K., Soulikia K., Tsiamalou I., Zervas K., Zourntou S. (General Hospital of Larissa ‘Koutlimpaneio and Triantafylleio’); Baloyiannis I., Diamantis A., Perivoliotis K., Tzovaras G.* (General University Hospital of Larissa); Christidis P., Ioannidis O.*, Loutzidou L. (George Papanikolaou General Hospital of Thessaloniki); Karaitianos I.*, Tsirlis T. (Henry Dunant Hospital Center); Charalabopoulos A., Liakakos T., Baili E., Schizas D.*, Spartalis E., Syllaios A., Zografos C. (Laiko University Hospital); Athanasakis E., Chrysos E., Tsiaoussis I., Xenaki S.*, Xynos E.* (University Hospital of Heraklion Crete and Interclinic Hospital of Crete). Hong Kong: Futaba K.*, Ho M. F., Hon S. F., Mak T. W. C., Ng S. S. M. (Prince of Wales Hospital); Foo C. C.* (Queen Mary Hospital). Hungary: Banky B.*, Suszták N. (Szent Borbála Kórház). India: Bhat G. A., Chowdri N. A., Mehraj A.*, Parray F., Shah Z. A., Wani R. (Sher-I-Kashmir Institute of Medical Sciences); Ahmed Z., Bali R., Bhat M. A., Laharwal A., Mahmood M., Mir I., Mohammad Z., Muzamil J., Rashid A.* (SMHS Hospital, Government Medical College). Ireland: Aremu M.*, Canas-Martinez A., Cullivan O., Murphy C., Owens P., Pickett L. (Connolly Hospital Blanchardstown); Corrigan M.*, Daly A., Fleming C.*, Jordan P., Killeen S., Lynch N., O’Brien S., Syed W. A. S., Vernon L. (Cork University Hospital); Fahey B. A., Larkin J. O.*, McCormick P., Mehigan B. J., Mohan H., Shokuhi P., Smith. J (St James’s Hospital); Bashir Y., Bass G. A., Connelly T. M., Creavin B., Earley H., Elliott J. A.*, Gillis A. E., Kavanagh D. O., Neary P. C., O’Riordan J. M., Reynolds I. S., Rice D., Ridgway P. F., Umair M., Whelan M. (Tallaght University Hospital); Corless K., Finnegan L., Fowler A., Hogan A., Lowery A.*, McKevitt K.*, Ryan É. (University Hospital Galway); Coffey J. C., Cunningham R. M., Devine M., Nally D.*, Peirce C. (University Hospital Limerick); Hardy N. P., Neary P. M., O’Malley S.*, Ryan M. (University Hospital Waterford/University College Cork). Italy: Macina S.* (ASST Mantua); Mariani N. M.*, Opocher E., Pisani Ceretti A. (ASST Santi Paolo E. Carlo); Bianco F.* (ASST Papa Giovanni XXIII – Bergamo); Marino M. V.*, Mirabella A., Vaccarella G. (Azienda Ospedaliera Ospedali Riuniti Villa Sofia-Cervello); Agostini C., Alemanno G., Bartolini I., Bergamini C., Bruscino A., De Vincenti R., Di Bella A., Fortuna L., Maltinti G., Muiesan P.*, Prosperi P.*, Ringressi M. N., Risaliti M., Taddei A.*, Tucci R. (Azienda Ospedaliera Universitaria Careggi); Campagnaro T.*, Guglielmi A., Pedrazzani C., Rattizzato S., Ruzzenente A., Turri G. (Azienda Ospedaliera Universitaria Integrata di Verona); Bellora P., D’Aloisio G., Ferrari M., Francone E., Gentilli S.*, Nikaj H. (Azienda Ospedaliero Universitaria Maggiore della Carità); Bianchini M., Chiarugi M., Coccolini F., Di Franco G., Furbetta N., Gianardi D., Guadagni S., Morelli L.*, Palmeri M., Tartaglia D.* (Azienda Ospedaliero Universitaria Pisana); Anania G.*, Carcoforo P.*, Chiozza M., De Troia A., Koleva Radica M., Portinari M., Sibilla M. G., Urbani A. (Azienda Ospedaliero Universitaria San’anna); Fabbri N., Feo C. V.*, Gennari S., Parini S., Righini E. (Azienda Unità Sanitaria Locale di Ferrara, Università di Ferrara); Annessi V., Castro Ruiz C., Montella M. T., Zizzo M.* (Azienda Unità Sanitaria Locale – IRCCS di Reggio Emilia); Grossi U., Novello S., Romano M., Rossi S., Zanus G.* (Ca’ Foncello Treviso – DISCOG – Università di Padova); Esposito G., Frongia F., Pisanu A., Podda M.* (Cagliari University Hospital); Belluco C., Lauretta A.*, Montori G., Moras L., Olivieri M.; Feo C. F., Perra T.*, Porcu A.*, Scanu A. M. (Cliniche San Pietro, Aou Sassari); Aversano A., Carbone F., Delrio P.*, Di Lauro K., Fares Bucci A., Rega D.*, Spiezio G. (Colorectal Surgical Oncology Unit – Istituto Nazionale Tumori Fondazione, Pascale IRCCS); Calabrò M.*, Farnesi F., Lunghi E. G., Muratore A.*, Pipitone Federico N. S. (Edoardo Agnelli); De Palma G. D., Luglio G.*, Pagano G., Tropeano F. P. (Federico II University Hospital); Baldari L.*, Boni L.*, Cassinotti E.* (Fondazione IRCCS Ca’ Granda – Ospedale Maggiore Policlinico di Milano); Cosimelli M., Fiore M.*, Guaglio M.*, Sorrentino L. (Fondazione IRCCS Istituto Nazionale dei Tumori, Milano); Agnes A., Alfieri S., Belia F., Biondi A., Cozza V., D’Ugo D., De Simone V., Litta F., Lorenzon L., Marra A. A., Marzi F., Parello A., Persiani R., Ratto C., Rosa F., Scrima O., Sganga G. (Fondazione Policlinico Universitario Agostino Gemelli IRCCS); Belli A.*, Izzo F., Patrone R. (HPB Surgical Oncology Unit – Istituto Nazionale Tumori Fondazione, Pascale IRCCS); Carrano F. M., Carvello M. M., Di Candido F., Maroli A., Spinelli A.* (Humanitas Clinical and Research Center IRCCS, Rozzano (Mi) and Humanitas University, Department of Biomedical Sciences, Pieve Emanuele (Mi)); Aprile A., Batistotti P., Massobrio A., Pertile D., Scabini S.*, Soriero D. (IRCCS Ospedale Policlinico San Martino); De Manzoni Garberini A.* (Ospedale Civile Spirito Santo); Federico P., Maida P., Marra E., Marte G., Petrillo A., Tammaro P., Tufo A.* (Ospedale del Mare); Berselli M.*, Borroni G.*, Cocozza E., Conti L., Desio M., Rizzi A. (ASST Sette Laghi-Varese); Baldi C.*, Corbellini C., Sampietro G. M. (Ospedale di Rho – ASST Rhodense); Baldini E.*, Capelli P., Conti L., Isolani S. M., Ribolla M. (Ospedale Guglielmo da Saliceto Piacenza); Bondurri A., Colombo F.*, Ferrario L., Guerci C., Maffioli A. (Ospedale Luigi Sacco Milano); Armao T., Ballabio M.*, Bisagni P., Gagliano A., Longhi M., Madonini M., Pizzini P. (Ospedale Maggiore di Lodi); Mochet S.*, Usai A. (Ospedale Regionale Umberto Parini); Bianco F.*, Incollingo P. (Ospedale S. Leonardo – Asl Napoli 3 Sud, Castellammare di Stabia); Mancini S., Marino Cosentino L.*, Sagnotta A.* (Ospedale San Filippo Neri); Nespoli L. C., Tamini N.* (Ospedale San Gerardo); Anastasi A., Bartalucci B., Bellacci A., Canonico G.*, Capezzuoli L., Di Martino C., Ipponi P., Linari C., Montelatici M., Nelli T., Spagni G., Tirloni L., Vitali A. (Ospedale San Giovanni di Dio); Abate E., Casati M.*, Casiraghi T., Laface L., Schiavo M. (Ospedale Vittorio Emanuele III – Carate Brianza); Arminio A., Cotoia A., Lizzi V.*, Vovola F. (Ospedali Riuniti Azienda Ospedaliera Universitaria Foggia); Vergari R.* (Ospedali Riuniti di Ancona); D’Ugo S.*, Depalma N., Spampinato M. G. (Vito Fazzi, Leece); Brachini G., Chiappini A., Cicerchia P. M., Cirillo B., De Toma G., Fiori E., Fonsi G. B., Iannone I., La Torre F., Lapolla P.*, Meneghini S., Mingoli A., Sapienza P., Zambon M. (Policlinico Umberto I Sapienza University of Rome); Capolupo G. T.*, Mazzotta E. (Policlinico Universitario Campus Bio Medico of Rome); Gattolin A., Migliore M., Rimonda R., Sasia D.*, Travaglio E. (Regina Montis Regalis Hospital, Mondovì); Cervellera M., Gori A., Sartarelli L., Tonini V.* (S. Orsola-Malpighi Hospital); Chessa A.*, Fiorini A., Norcini C. (San Giovanni di Dio); Colletti G., Confalonieri M., Costanzi A.*, Frattaruolo C., Mari G., Monteleone M. (San Leopoldo Mandic); De Nardi P.*, Parise P., Vignali A. (San Raffaele Scientific Institute, Milan); Belvedere A., Bernante P., Jovine E., Neri J., Parlanti D., Pezzuto A. P., Poggioli G., Rottoli M.*, Tanzanu M., Violante T. (IRCCS Azienda Ospedaliero – Universitaria di Bologna; Alma Mater Studiorum University of Bologna); Borghi F., Cianflocca D., Di Maria Grimaldi S., Donati D., Gelarda E., Giraudo G., Giuffrida M. C., Marano A.*, Palagi S., Pellegrino L., Peluso C., Testa V.* (Santa Croce E. Carle Hospital, Cuneo); Agresta F.*, Prando D.*, Zese M.* (Santa Maria degli Angeli Hospital ULSS 5 – Adria); Armatura G.*, Frena A., Scotton G.* (St Moritz Hospital); Gallo G.*, Sammarco G., Vescio G. (University ‘Magna Graecia’ of Catanzaro); Di Marzo F.* (Valtiberina); Fontana T.* (‘Vittorio Emanuele’ – Gela). Japan: Kanemitsu Y.*, Moritani K. (National Cancer Center Hospital). Jordan: Al Abdallah M.*, Ayasra F., Ayasra Y., Qasem A. (Al-Basheer Hospital); Fahmawee T., Hmedat A., Obeidat K.* (King Abdullah University Hospital); Abou Chaar M. K., Al-Masri M.*, Al-Najjar H., Alawneh F. (King Hussein Cancer Center). Libya: Alkadeeki G.*, Al Maadany F. S. (Al-Jalaa Hospital); Aldokali N., Senossi O., Subhi M. T. (Alkhadra Hospital); Burgan D.*, Kamoka E., Kilani A. I. (National Cancer Institute, Sabratha); Ellojli I.*, Kredan A. (Tripoli University Hospital). Lithuania: Bradulskis S., Dainius E., Kubiliute E., Kutkevičius J., Parseliunas A., Subocius A., Venskutonis D.* (Lithuanian University of Health Sciences Kaunas Clinical Hospital). Madagascar: Rasoaherinomenjanahary F.*, Razafindrahita J. B., Samison L. H. (Joseph Ravoahangy Andrianavalona Hospital). Malaysia: Hamdan K. H., Ibrahim M. R., Tan J. A., Thanapal M. R.* (Hospital Kuala Lumpur); Amin Sahid N., Hayati F.*, Jayasilan J., Sriram R. K.*, Subramaniam S. (Queen Elizabeth Hospital and Universiti Malaysia Sabah, Kota Kinabalu, Sabah); Che Jusoh M. A., Hussain A. H., Mohamed Sidek A. S., Mohd Yunus M. F., Soh J. Y., Wong M., Zakaria A. D.*, Zakaria Z. (School of Medical Sciences and Hospital, Universiti Sains Malaysia); Fathi N. Q., Xavier R. G., Roslani A. C.* (University Malaya Medical Centre). Mexico: Buerba G. A., Mercado M. Á.*, Posadas-Trujillo O. E., Salgado-Nesme N., Sarre C. (Instituto Nacional de Ciencias Médicas y Nutrición ‘Salvador Zubirán’). Morocco: Amrani L., El Ahmadi B., El Bouazizi Y., Majbar A. M., Benkabbou A., Mohsine R., Souadka A.* (Institut National d’Oncologie, Université Mohammed V Rabat). Netherlands: Hompes R.*, Meima-van Praag E. M., Pronk A. J. M., Sharabiany S. (Amsterdam UMC, University of Amsterdam); Grotenhuis B.*, Hartveld L. (Antoni Van Leeuwenhoek Ziekenhuis); Posma-Bouman L.* (Slingeland Ziekenhuis); Derksen T., Franken J., Oosterling S.* (Spaarne Gasthuis); Konsten J.*, Van Heinsbergen M. (Viecuri Medisch Centrum). Nigeria: Olaogun J.* (Ekiti State University Teaching Hospital); Abdur-Rahman L.*, Adeyeye A.*, Bello J., Olasehinde O., Popoola A. (University of Ilorin Teaching Hospital). Pakistan: Jamal A., Kerawala A. A.* (Cancer Foundation Hospital); Memon A. S.*, Nafees Ahmed R., Rai .L* (Dr Ruth K. M. Pfau Civil Hospital); Ayub B., Ramesh P., Sayyed R.* (Patel Hospital); Butt U. I.*, Kashif M., Qureshi A.*, Farooka M. W.*, Ayyaz M.* (Services Hospital Lahore); Ayubi A., Waqar S. H.* (Pakistan Institute of Medical Sciences). Poland: Major P. (Jagiellonian University Medical College). Portugal: Azevedo C., Machado D., Mendes F.* (Centro Hospitalar Cova da Bei