BMC Public Health · 2014 · 305 citations · 32 references
32
Complex interventions: how “out of control” can a randomised controlled trial be?
Penelope Hawe, Alan Shiell, Therese Riley · BMJ · 2004 · 1.2K citations · Full text
Assessment of validity of self-reported smoking status.
Suzy L Wong, Margot Shields, Scott T. Leatherdale et al. · PubMed · 2012 · 394 citations