[1] Emory Univ, Dept Med, Atlanta, GA 30322 USA
[2] Emory Univ, Div Infect Dis, Atlanta, GA 30322 USA
[3] Emory Univ, Sch Med, Div Infect Dis, Atlanta, GA USA
[4] Emory Univ, Dept Pathol & Lab Med, Atlanta, GA 30322 USA
[5] Grady Mem Hosp, Clin Lab, Atlanta, GA 30303 USA