1. Karmanos Cancer Institute, Wayne State University, Detroit, MI 48201, USA
2. Department of Oncology, Wayne State University, Detroit, MI 48201, USA
3. Departments of Epidemiology and Environmental Health Sciences and Comprehensive Cancer Center, University of Michigan, Ann Arbor, MI 48103, USA
4. Department of Biostatistics and Research Epidemiology, Henry Ford Hospital, Detroit, MI 48310, USA
5. Department of Epidemiology and Biostatistics, Case Western Reserve University, Cleveland, OH 44109, USA
6. Departments of Epidemiology, Columbia University Mailman School of Public Health, New York, NY 10032, USA