1. School of Pharmacy, Virginia Commonwealth University (VCU), Richmond, VA
2. School of Pharmacy, VCU
3. Health Outcomes, North America Medical Affairs, GlaxoSmithKline, Research Triangle Park, NC
4. Outcomes Research, Developmental Products, Pfizer, Inc., New York, NY; at the time of this study he was Associate Director, Health Outcomes, U.S. Medical Affairs, Glaxo Wellcome Inc., Research Triangle Park, NC