[1] Baylor Coll Med, Dept Family & Community Med, Houston, TX 77030 USA
[2] Baylor Coll Med, Dept Med, Sect Hlth Serv Res, Houston, TX 77030 USA
[3] Baylor Coll Med, Dept Surg, Sect Hlth Serv Res, Houston, TX 77030 USA
[4] Michael E DeRakey Vet Affairs Med Ctr, Houston VA Ctr Innovat Qual Effectiveness & Safet, Houston, TX USA
[5] Minneapolis Vet Affairs Hlth Care Syst, Dept Med, Infect Dis, Minneapolis, MN USA
[6] Boston Vet Affairs Healthcare Syst, Sect Infect Dis, Dept Med, Boston, MA USA
[7] Boston Univ, Sch Med, Boston, MA 02118 USA