RT Journal Article SR Electronic T1 Author response: letter on ‘shift work and diabetes mellitus: a meta-analysis of observational studies’ JF Occupational and Environmental Medicine JO Occup Environ Med FD BMJ Publishing Group Ltd SP 805 OP 806 DO 10.1136/oemed-2014-102512 VO 71 IS 11 A1 Zuxun Lu A1 Yong Gan YR 2014 UL http://oem.bmj.com/content/71/11/805.abstract AB