1 Department of Infectious Diseases, Tokyo Women's Medical University Hospital, Kawada-cho 8-1, Shinjuku-ku, Tokyo, Japan; Department of Hematology, Tokyo Women's Medical University Hospital, Tokyo, Japan; Department of Internal Medicine, Tokyo Metropolitan Health and Medical Treatment Corporation Tama-Hokubu Medical Center, Tokyo, Japan. Electronic address: hirai.yuji@twmu.ac.jp.
2 Department of Infectious Diseases, Tokyo Women's Medical University Hospital, Kawada-cho 8-1, Shinjuku-ku, Tokyo, Japan.
3 Department of Dermatology, Tokyo Women's Medical University Hospital, Tokyo, Japan.
4 Department of Infectious Diseases, Tokyo Women's Medical University Hospital, Kawada-cho 8-1, Shinjuku-ku, Tokyo, Japan; Department of Hematology, Tokyo Women's Medical University Hospital, Tokyo, Japan.