Erratum: Microporous polysaccharide multilayer coated BCP composite scaffolds with immobilised calcitriol promote osteoporotic bone regeneration both in vitro and in vivo (Theranostics (2019) 9:4 (1125-1143) DOI:10.7150/thno.29566)

© The author(s).The authors regret that the image of BCP group without Cal in 12 W in the Fig. 7B was wrongly attached due to their carelessness in integrating figures. The correct version is shown below. This image substitution would not affect any results presented in the originally-published version, nor the corresponding text description and the conclusion of the paper. The authors apologize for any inconvenience or misunderstanding that this error may have caused