RT Journal Article SR Electronic T1 Review: lower dose combination antihypertensive therapy is preferable to standard dose single drug therapy JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 11 OP 11 DO 10.1136/ebm.9.1.11 VO 9 IS 1 YR 2004 UL http://ebm.bmj.com/content/9/1/11.abstract AB