[1] Univ Mississippi, Sch Pharm, Dept Pharm Adm, POB 1848,Faser Hall 235, Oxford, MS 38677 USA
[2] Univ Houston, Coll Pharm, Dept Pharmaceut Hlth Outcomes & Policy, Houston, TX 77030 USA
[3] Univ Texas MD Anderson Canc Ctr, Dept Hlth Serv Res, Houston, TX 77030 USA
[4] Univ Texas Hlth Sci Ctr Houston, Div Geriatr & Palliat Med, McGovern Med Sch, Houston, TX 77030 USA