1. College of Medicine, The Pennsylvania State University, Hershey, Pennsylvania
2. Merck Research Laboratories, Epidemiology Department, West Point, Pennsylvania
3. Department of Pharmacy Practice and Administration, The Ohio State University College of Pharmacy, Columbus, Ohio
4. Department of Public Health Sciences, the College of Medicine, The Pennsylvania State University, Hershey, Pennsylvania
5. Wake Forest University School of Medicine, Winston-Salem, North Carolina
6. Kernersville Primary Care, Kernersville, North Carolina
7. Research Triangle Institute Health Solutions, Patient Reported Outcomes, Research Triangle Park, North Carolina