1. Department of Epidemiology, School of Public Health, University of Washington, Seattle, WA 98195, USA
2. Department of Epidemiology, Robert Stempel College of Public Health and Social Work, Florida International University, 11200 SW 8 Street, HLS 390W2, Miami, FL 33199, USA
3. Public Health Research Institute of India, Mysore, Karnataka 560020, India
4. Department of Health Promotion and Disease Prevention, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, FL 33199, USA
5. Division of Infectious Diseases, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA