1. Public Health Program, Healthcare Services and Sciences Program, School of Interdisciplinary Health Programs, College of Health and Human Services, Western Michigan University, Kalamazoo, MI, USA
2. Specialty Program in Alcohol and Drug Abuse, School of Interdisciplinary Health Programs, College of Health and Human Services, Western Michigan University, Kalamazoo, MI, USA
3. Statistics Department, Western Michigan University, Kalamazoo, MI, USA
4. College of Public Health, University of South Florida, Tampa, FL, USA