1 Department of Pediatrics, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan.
2 Department of Pediatrics and Developmental Biology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.
3 Division of Rheumatology and Immunology, Children's Hospital of Chongqing Medical University, Chongqing, China.
4 Department of Pediatric Hematology and Oncology, Ibaraki Children's Hospital, Mito, Japan.
5 Department of Pediatrics, Dokkyo Medical University Saitama Medical Center, Saitama, Japan.
6 Department of Neonatology, Ibaraki Children's Hospital, Mito, Japan.
7 Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Ibaraki, Japan.
8 Department of Hematology/Oncology, Saitama Children's Medical Center, Saitama, Japan.
9 Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan.
10 Department of Pediatrics, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan. hkanegane.ped@tmd.ac.jp.
11 Department of Child Health and Development, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan. hkanegane.ped@tmd.ac.jp.