[1] Washington Univ, Sch Med, Dept Internal Med, Div Infect Dis, St Louis, MO 63110 USA
[2] Gazi Univ, Fac Med, Dept Infect Dis, Ankara, Turkey
[3] Washington Univ, Sch Med, Dept Med, Div Gen Med Sci, St Louis, MO 63110 USA
[4] Washington Univ, Sch Med, Div Hlth Behav Res, St Louis, MO 63130 USA