RT Journal Article SR Electronic T1 Role of personality traits in healthy ageing JF Journal of Epidemiology and Community Health JO J Epidemiol Community Health FD BMJ Publishing Group Ltd SP 769 OP 769 DO 10.1136/jech-2020-214469 VO 74 IS 10 A1 Christian Hakulinen YR 2020 UL http://jech.bmj.com/content/74/10/769.abstract AB