1 Department of Clinical Laboratory, Saitama Medical University, Saitama, Japan; Project of Clinical and Basic Research for FOP, Saitama Medical University, Saitama, Japan.
2 Project of Clinical and Basic Research for FOP, Saitama Medical University, Saitama, Japan; Division of Biomedical Sciences, Research Center for Genomic Medicine, Saitama Medical University, Saitama, Japan.
3 Department of Clinical Laboratory, Saitama Medical University, Saitama, Japan.
4 Division of Biomedical Sciences, Research Center for Genomic Medicine, Saitama Medical University, Saitama, Japan.
5 Department of Rehabilitation Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
6 Department of Clinical Laboratory, Saitama Medical University, Saitama, Japan; Project of Clinical and Basic Research for FOP, Saitama Medical University, Saitama, Japan. Electronic address: ikebuchi@saitama-med.ac.jp.
7 Project of Clinical and Basic Research for FOP, Saitama Medical University, Saitama, Japan; Division of Biomedical Sciences, Research Center for Genomic Medicine, Saitama Medical University, Saitama, Japan. Electronic address: katagiri@saitama-med.ac.jp.