?:authorAffiliation
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[\'Department of Orthopaedic Surgery, JR Sendai Hospital, Sendai, Japan.\', \'Department of Orthopaedic Surgery, Tohoku University School of Medicine, Sendai, Japan hagi@med.tohoku.ac.jp.\', \'Department of Orthopaedic Surgery, Tohoku University School of Medicine, Sendai, Japan.\', \'Division of Epidemiology, Department of Public Health and Forensic Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan.\', \'Department of Orthopaedic Science, Tohoku Rosai Hospital, Sendai, Japan.\']
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