RT Journal Article SR Electronic T1 Trajectories of multisite musculoskeletal pain and implications for prevention JF Occupational and Environmental Medicine JO Occup Environ Med FD BMJ Publishing Group Ltd SP oemed-2016-104196 DO 10.1136/oemed-2016-104196 A1 David Coggon A1 Georgia Ntani YR 2017 UL http://oem.bmj.com/content/early/2017/03/14/oemed-2016-104196.abstract AB