RT Journal Article SR Electronic T1 The need for methods to measure capacity and incapacity from working life to old age JF Occupational and Environmental Medicine JO Occup Environ Med FD BMJ Publishing Group Ltd SP 467 OP 467 DO 10.1136/oemed-2017-104291 VO 74 IS 7 A1 Clas-Håkan Nygård A1 Taina Rantanen YR 2017 UL http://oem.bmj.com/content/74/7/467.abstract AB