Correction: Relationship between serum osteocalcin/undercarboxylated osteocalcin and type 2 diabetes: a systematic review/meta-analysis study protocol.

Liu Y, Liu X, R Lewis J, et al. Relationship between serum osteocalcin/undercarboxylated osteocalcin and type 2 diabetes: a systematic review/meta-analysis study protocol. BMJ Open 2019;9:e023918. doi: 10.1136/bmjopen-2018-023918

The affiliations for the third author, Joshua R Lewis, were incomplete in the previous version of this manuscript. The correct and updated affiliations of the authors are as follows:

Yihui Liu,1,2 Xiaoying Liu,2 Joshua R Lewis,1,2,3,4 Kaye Brock,5 Tara C Brennan-Speranza,5 Armando Teixeira-Pinto1,2

1Centre for Kidney Research, The Children’s Hospital, Westmead, New South Wales, Australia

2Biostatistics, School Public Health, Faculty of Medicine and Health, University of Sydney, Camperdown, New South Wales, Australia

3School of Medicine, Faculty of Health and Medical Sciences, The University of Western Australia, Perth, Australia

4School of Medical and Health Sciences, Edith Cowan University, Joondalup, Australia

5School of Medical Sciences, University of Sydney, Camperdown, New South Wales, Australia