1. Center for Biobehavioral Research Sanford Research Fargo North Dakota USA
2. Department of Psychiatry and Behavioral Sciences University of Minnesota Minneapolis Minnesota USA
3. Department of Nutritional Sciences University of Michigan School of Public Health Ann Arbor Michigan USA
4. Division of Health Promotion and Behavioral Science San Diego State University School of Public Health San Diego California USA
5. Department of Health Law Policy and Management Boston University School of Public Health Boston Massachusetts USA