More Groups
Fewer Groups
More People
Fewer People
Hay, J. L.; Oliveria, S. A.; Dusza, S. W.; Phelan, D. L.; Ostroff, J. S.; Halpern, A. C. Cancer Epidemiology Biomarkers and Prevention (2006)
Oliveria, S. A.; Dusza, S. W.; Phelan, D. L.; Ostroff, J. S.; Berwick, M.; Halpern, A. C. American Journal of Preventive Medicine (2004)