[1] Osaka Univ, Div Infect Control & Prevent, Suita, Osaka, Japan
[2] Osaka Univ, Dept Infect Metagen, Genome Informat Res Ctr, Suita, Osaka, Japan
[3] Osaka Univ, Lab Clin Res Infect Dis, Int Res Ctr Infect Dis, Microbial Dis Res Inst, Suita, Osaka, Japan
[4] Osaka Univ, Dept Otorhinolaryngol Head & Neck Surg, Osaka Univ Med Sci, Grad Sch, Suita, Osaka, Japan