Process evaluation in complex public health intervention studies: the need for guidance
Graham Moore, Suzanne Audrey, Mary Barker, Lyndal Bond, Chris Bonell, Cyrus Cooper, Wendy Hardeman, Laurence Moore, Alicia O'Cathain, Tannaze Tinati, Danny Wight, Janis Baird
J Epidemiol Community Health Feb 2014, 68 (2) 101-102; DOI: 10.1136/jech-2013-202869