1. Pharmacoeconomics and Pharmacoepidemiology Research Unit, College of Pharmacy, Washington State University, PO Box 646510, Pullman, WA 99164-6510
2. Pharmacoeconomics and Pharmacoepidemiology Research Unit, College of Pharmacy, Washington State University, Pullman.
3. Pharmacoeconomics and Pharmacoepidemiology Research Unit, College of Pharmacy; Washington State University, Pullman; Pullman Memorial Hospital, Pullman, Washington
4. Center for Pharmaceutical Economics, College of Pharmacy, University of South Carolina, Columbia