[1] Univ Florida, Coll Med, Dept Hlth Outcomes & Biomed Informat, Gainesville, FL USA
[2] Univ Kentucky, Coll Pharm, Dept Pharmaceut Outcomes & Policy, Lexington, KY USA
[3] Bristol Myers Squibb, Worldwide Hlth Econ & Outcomes Res, New Brunswick, NJ USA
[4] Univ Florida, Coll Med, Dept Obstet & Gynecol & Psychiat, Gainesville, FL USA
[5] Univ Florida, Coll Publ Hlth, Dept Epidemiol, Gainesville, FL 32611 USA