RT Journal Article SR Electronic T1 Older adults who reported strain when caring for a spouse with disabilities had increased mortality JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 128 OP 128 DO 10.1136/ebm.5.4.128 VO 5 IS 4 YR 2000 UL http://ebm.bmj.com/content/5/4/128.1.abstract AB