RT Journal Article SR Electronic T1 Sildenafil improved erections and increased successful sexual intercourse in diabetic men with erectile dysfunction JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 111 OP 111 DO 10.1136/ebm.1999.4.111 VO 4 IS 4 YR 1999 UL http://ebm.bmj.com/content/4/4/111.abstract AB