1. Department of Public Health; William Paterson University; Wayne NJ USA
2. Department of Epidemiology and Environmental Health Sciences; Jiann-Ping Hsu College of Public Health; Georgia Southern University; Statesboro GA USA
3. Department of Health and Behavior Studies; Teachers College; Columbia University; New York NY USA
4. Department of Biostatistics; Jiann-Ping Hsu College of Public Health; Georgia Southern University; Statesboro GA USA