RT Journal Article SR Electronic T1 Endogenous testosterone levels and cardiovascular disease in healthy men JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 867 OP 869 DO 10.1136/hrt.2010.217414 VO 97 IS 11 A1 Channer, Kevin S YR 2011 UL http://heart.bmj.com/content/97/11/867.abstract AB