RT Journal Article SR Electronic T1 Additional Articles Abstracted in ACP Journal Club JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 164 OP 164 DO 10.1136/ebm.1998.3.164 VO 3 IS 6 YR 1998 UL http://ebm.bmj.com/content/3/6/164.abstract AB