[1] Natl Taiwan Univ Hosp, Coll Med, Dept Lab Med, Div Clin Microbiol, Taipei, Taiwan
[2] Natl Taiwan Univ Hosp, Coll Med, Dept Internal Med, Div Infect Dis, Taipei, Taiwan
[3] Natl Taiwan Univ Hosp, Coll Med, Dept Internal Med, Div Clin Microbiol, Taipei, Taiwan
[4] Univ Birmingham, Sch Med, Birmingham, W Midlands, England
[5] Birmingham Heartlands & Solihull NHS Trusts, Hlth Protect Agcy, W Midlands Publ Hlth Lab, Birmingham, W Midlands, England