1. Division of Cancer Epidemiology and GeneticsNational Cancer Institute, National Institutes of Health Bethesda MD
2. Department of Medicine, Vanderbilt Epidemiology Center and Vanderbilt‐Ingram Cancer CenterVanderbilt University Nashville TN
3. Department of Biology, School of Computer, Mathematical, and Natural SciencesMorgan State University Baltimore MD
4. Department of EpidemiologyCancer Institute, Chinese Academy of Medical Sciences Beijing People's Republic of China
5. State Key Laboratory of Oncogene and Related Genes & Department of EpidemiologyShanghai Cancer Institute, Renji Hospital, Shanghai Jiaotong University School of Medicine Shanghai People's Republic of China
6. Department of Obstetrics and Gynecology and Preventive MedicineUniversity of Southern California Los Angeles CA