RT Journal Article SR Electronic T1 Physical frailty and decline in general and specific cognitive abilities JF Journal of Epidemiology and Community Health JO J Epidemiol Community Health FD BMJ Publishing Group Ltd SP 105 OP 106 DO 10.1136/jech-2019-213410 VO 74 IS 2 A1 Marcus Richards YR 2020 UL http://jech.bmj.com/content/74/2/105.abstract AB