[1] Washington Univ, Sch Med, Dept Internal Med, St Louis, MO 63110 USA
[2] Univ Calif San Francisco, Global Hlth & Clin Sci, San Francisco, CA 94143 USA
[3] Emory Univ, Dept Gynecol & Obstet, Sch Med, 100 Woodruff Circle, Atlanta, GA 30322 USA
[4] Univ Calif San Francisco, Dept Infect Dis, San Francisco, CA 94143 USA