1. UMDNJ–Robert Wood Johnson Medical School, Department of Family Medicine, Somerset, New Jersey.
2. UMDNJ–Robert Wood Johnson Medical School, Department of Family Medicine and School of Public Health, Department of Biometrics, Somerset, New Jersey.
3. UMDNJ–Robert Wood Johnson Medical School, Department of Family Medicine and School of Public Health, Department of Epidemiology, Somerset, New Jersey.
4. Center for Research in Family Practice and Primary Care, Cleveland, Ohio.
5. Cancer Institute of New Jersey, New Brunswick, New Jersey.