1. Department of Epidemiology; Graduate School of Public Health, University of Pittsburgh; Pittsburgh PA
2. Division of Cancer Control and Population Sciences; University of Pittsburgh Cancer Institute; Pittsburgh PA
3. Department of Preventive Medicine; Keck School of Medicine, University of South California; Los Angeles CA
4. Office of Clinical Sciences, Duke-NUS Medical School; Singapore Singapore
5. Saw Swee Hock School of Public Health; National University of Singapore; Singapore Singapore
6. National Registry of Diseases Office, Health Promotion Board; Singapore Singapore