RT Journal Article SR Electronic T1 Physical activity was associated with a reduced risk of death from all causes among postmenopausal women JF Evidence Based Nursing JO Evid Based Nurs FD BMJ Publishing Group Ltd and RCN Publishing Company Ltd SP 23 OP 23 DO 10.1136/ebn.1.1.23 VO 1 IS 1 YR 1998 UL http://ebn.bmj.com/content/1/1/23.abstract AB