RT Journal Article SR Electronic T1 Testosterone supplementation did not prevent cognitive decline or increase bone mineral density in older men JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 71 OP 71 DO 10.1136/ebm.13.3.71 VO 13 IS 3 YR 2008 UL http://ebm.bmj.com/content/13/3/71.abstract AB