[1] George Mason Univ, Dept Hlth Adm & Policy, Fairfax, VA USA
[2] Shenandoah Univ, Bernard J Dunn Sch Pharm, Winchester, VA USA
[3] George Mason Univ, Dept Hlth Adm & Policy, 4400 Univ Dr,MS 1J3, Fairfax, VA 22030 USA
[4] Florida Atlantic Univ, Schmidt Coll Med, Dept Populat Hlth & Social Med, Boca Raton, FL USA