RT Journal Article SR Electronic T1 Review: fixed-dose drug combinations improve medication compliance compared with free-drug regimens JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 18 OP 18 DO 10.1136/ebm.13.1.18 VO 13 IS 1 YR 2008 UL http://ebm.bmj.com/content/13/1/18.abstract AB