[1] Japanese Red Cross Okayama Hosp, Cardiol, Okayama, Japan
[2] Johns Hopkins Univ, Internal Med, Baltimore, MD USA
[3] Johns Hopkins Univ, Epidemiol, Baltimore, MD USA
[4] Harbor UCLA, Los Angeles Biomed Rsch Inst, Cardiol, Torrance, CA USA
[5] Northwestern Univ, Feinberg Sch Med, Div Infect Dis, Chicago, IL 60611 USA
[6] Johns Hopkins Univ, Endocrinol Diabet & Metab, Baltimore, MD USA
[7] Harbor UCLA, Los Angeles Biomed Rsch Inst, Med, Torrance, CA USA
[8] Univ Pittsburgh, Infect Dis & Microbiol, Pittsburgh, PA USA