RT Journal Article SR Electronic T1 Cognitive function and pre-retirement psychosocial work characteristics JF Occupational and Environmental Medicine JO Occup Environ Med FD BMJ Publishing Group Ltd SP 639 OP 639 DO 10.1136/oemed-2016-103830 VO 73 IS 10 A1 Johannes Siegrist YR 2016 UL http://oem.bmj.com/content/73/10/639.abstract AB