More Groups
Fewer Groups
More People
Fewer People
Floyd, T.; Ostroff, J.; Rapkin, B. Annals of Behavioral Medicine (2008)
Lounsbury, D. W.; Reynolds, T. C.; Rapkin, B. D.; Robson, M. E.; Ostroff, J. Social Science and Medicine (2007)
Burkhalter, J. E.; Springer, C. M.; Chhabra, R.; Ostroff, J. S.; Rapkin, B. D. Nicotine & Tobacco Research (2005)