[1] Boston Univ, Sch Med, Dept Med, Sect Infect Dis, Boston, MA USA
[2] Boston Med Ctr, Boston, MA USA
[3] Boston Univ, Sch Med, Dept Med, Sect Gen Internal Med, Boston, MA USA
[4] VA Boston Healthcare Syst, Ctr Healthcare Org & Implementat Res, Boston, MA USA
[5] VA Bedford Healthcare Syst, Ctr Healthcare Org & Implementat Res, Bedford, MA USA
[6] Harvard Med Sch, Boston, MA USA
[7] Vet Affairs Boston Healthcare Syst, Dept Med, Boston, MA USA
[8] Boston Univ, Sect Infect Dis, Sch Med, 801 Massachusetts Ave,2nd Floor, Boston, MA 02118 USA