1 Fox Chase Cancer Center, Division of Cancer Prevention and Control, Philadelphia, Pennsylvania.
2 Temple University, Geography and Urban Studies, Philadelphia, Pennsylvania.
3 Christiana Care Health System, Helen F. Graham Cancer Institute, Wilmington, Delaware.
4 Temple University School of Medicine, Center for Biostatistics and Epidemiology, Philadelphia, Pennsylvania.
5 Division of Cancer Prevention and Control, Fox Chase Cancer Center, 333 Cottman Ave, 4th Fl, Young Pavilion, Philadelphia, PA 19111 (Shannon.Lynch@fccc.edu).