%0 Journal Article %B BMJ Open %D 2013 %G eng %M 23793693 %T INterpreting the Processes of the UMPIRE Trial (INPUT): protocol for a qualitative process evaluation study of a fixed-dose combination (FDC) strategy to improve adherence to cardiovascular medications. %V 3 %2 3664347 %7 26 June 2013 %@ 2044-6055 (Electronic)