RT Journal Article SR Electronic T1 Review: combination therapy with renin angiotensin inhibitors reduces proteinuria more than single drugs alone in renal disease JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 73 OP 73 DO 10.1136/ebm.13.3.73 VO 13 IS 3 YR 2008 UL http://ebm.bmj.com/content/13/3/73.abstract AB