[1] Auburn Univ, Dept Hlth Outcomes Res & Policy, Harrison Sch Pharm, Auburn, AL 36849 USA
[2] Marshfield Clin Res Fdn, Biomed Informat Res Ctr, Marshfield, WI USA
[3] Massachusetts Coll Pharm & Hlth Sci, Int Ctr Pharmaceut Econ & Policy, Boston, MA USA
[4] US FDA, Off Gener Drugs, Silver Spring, MD USA