○Yoshihiro Hirakawa1, Tomoya Manaka1, Yoichi Ito1,2, Koichi Ichikawa1, Yoshinobu Matsuda3, Hayato Shimizu4, Shouichi Murakami5, Hiroaki Nakamura1
(1.Department of Orthopaedic Surgery, Osaka City University Graduate School of Medicine, 2.Ito clinic, Osaka Shoulder Center, 3.Department of Orthopaedic Surgery, Kashiwara Municipal Hospital, 4.Department of Orthopaedic Surgery, Nagayoshi General Hospital, 5.Department of Orthopaedic Surgery, Osaka General Hospital of West Japan Railway Company)
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