Association of glucocerebrosidase polymorphisms and mutations with dementia in incident Parkinson's disease

PINE was supported by Parkinson’s UK (grant numbers G0502, G0914, G1302), Scottish Government Chief Scientist Office, BMA Doris Hillier Award, the BUPA Foundation, NHS Grampian Endowments, and RS MacDonald Trust. The Norwegian ParkWest study has been funded by the Research Council of Norway (grant number 177966), the Western Norway Regional Health Authority (grant number 911218), Stavanger University Hospital Research Funds (grant number 501611), and the Norwegian Parkinson’s Disease Association. Janete Chung and Kristin Aaser Lunde are supported by the Western Norway Regional Health Authority (grant numbers 911859 and 911830). The NYPUM study has been funded by the Swedish Medical Research Council, the Swedish Parkinson’s Disease Association, the Swedish Parkinson Foundation, Erling Persson Foundation, Kempe Foundation and the Västerbotten County Council. The funding sources had no role in the design and conduct of the study: collection, management, analysis, and interpretation of the data; preparation, review, or approval of the manuscript: and decision to submit the manuscript for publication.Peer reviewedPostprin