RT Journal Article SR Electronic T1 Higher physical activity during middle age is associated with increased odds of survival without cognitive or physical impairments in older women JF Evidence Based Nursing JO Evid Based Nurs FD BMJ Publishing Group Ltd and RCN Publishing Company Ltd SP 85 OP 86 DO 10.1136/ebn1063 VO 13 IS 3 A1 Hirsch, Calvin YR 2010 UL http://ebn.bmj.com/content/13/3/85.abstract AB