1. Department of Health Behavior and Health Education, University of Michigan School of Public Health, Ann Arbor, Michigan, USA;
2. Centers for Behavioral and Preventative Medicine, The Miriam Hospital, Providence, Rhode Island, USA;
3. Department of Psychiatry and Human Behavior, Alpert Medical School of Brown University, Providence, Rhode Island, USA;
4. Department of Behavioral and Social Sciences, Brown University, Providence, Rhode Island, USA;
5. Department of Psychology, Michigan State University, East Lansing, Michigan, USA