[1] Univ Texas Hlth Sci Ctr San Antonio, Dept Family & Community Med, Joe R & Teresa Lozano Long Sch Med, 7703 Floyd Curl Dr, San Antonio, TX 78229 USA
[2] Boston Univ, Sch Med, Dept Family Med, Boston Med Ctr, Boston, MA 02118 USA
[3] Anal Grp, Boston, MA USA
[4] Boston Univ, Sch Publ Hlth, Ctr Healthcare Org & Implementat Res, VA Boston Healthcare Syst, Boston, MA USA
[5] Boston Univ, Sch Publ Hlth, Dept Hlth Policy & Management, Boston, MA USA