1 Department of Clinical Infectious Diseases, Aichi Medical University Hospital, Aichi, Japan; Department of Infection Control and Prevention, Aichi Medical University Hospital, Aichi, Japan. Electronic address: hiraichimed@gmail.com.
2 Department of Clinical Infectious Diseases, Aichi Medical University Hospital, Aichi, Japan; Department of Infection Control and Prevention, Aichi Medical University Hospital, Aichi, Japan.