[1] Kanazawa Univ, Grad Sch Med Sci, Dept Orthopaed Surg, 13-1 Takara Machi, Kanazawa, Ishikawa 9208641, Japan
[2] Toyama Prefectural Cent Hosp, Dept Orthoped Surg, Toyama, Japan
[3] Tonami Gen Hosp, Dept Orthopaed Surg, Tonami, Japan
[4] Nagoya Univ, Grad Sch Med, Dept Orthoped Surg, Nagoya, Japan
[5] Univ Tsukuba, Fac Med, Dept Orthopaed Surg, Ibaraki, Japan
[6] Univ Tsukuba, Grad Sch Comprehens Human Sci, Dept Orthopaed Surg, Ibaraki, Japan
[7] Ibaraki Seinan Med Ctr Hosp, Dept Orthopaed Surg, Ibaraki, Japan
[8] Keio Univ, Dept Orthopaed Surg, Sch Med, Tokyo, Japan
[9] Natl Hosp Org Murayama Med Ctr, Dept Orthopaed Surg, Tokyo, Japan
[10] Chiba Univ, Grad Sch Med, Dept Orthopaed Surg, Chiba, Japan
[11] Univ Fukui, Dept Orthopaed & Rehabil Med, Fac Med Sci, Fukui, Japan
[12] Hamamatsu Univ Sch Med, Dept Orthopaed Surg, Shizuoka, Japan
[13] Nagoya Kyoritsu Hosp, Dept Orthopaed Surg, Nagoya, Japan
[14] Sapporo Med Univ, Dept Orthopaed Surg, Sapporo, Japan
[15] Matsuda Orthoped Mem Hosp, Dept Orthopaed Surg, Sapporo, Japan
[16] Yamaguchi Univ, Dept Orthopaed Surg, Grad Sch Med, Yamaguchi, Japan
[17] Shinshu Univ, Dept Orthopaed Surg, Sch Med, Nagano, Japan
[18] Kyoto Prefectural Univ Med, Grad Sch Med Sci, Dept Orthopaed, Kyoto, Japan
[19] Saiseikai Shiga Hosp, Dept Orthopaed, Ritto, Shiga, Japan
[20] Tohoku Univ, Dept Orthopaed Surg, Grad Sch Med, Sendai, Miyagi, Japan
[21] Kyushu Univ, Grad Sch Med Sci, Dept Orthopaed Surg, Fukuoka, Japan
[22] Nagoya City Univ, Dept Orthopaed Surg, Grad Sch Med Sci, Nagoya, Japan
[23] Nihon Univ Hosp, Dept Orthopaed Surg, Tokyo, Japan
[24] Nihon Univ, Dept Orthopaed Surg, Sch Med, Tokyo, Japan
[25] Kawasaki Med Sch, Dept Orthoped Traumatol & Spine Surg, Okayama, Japan
[26] Osaka City Univ, Dept Orthopaed Surg, Grad Sch Med, Osaka, Japan
[27] Kitasato Univ, Dept Orthopaed Surg, Sch Med, Sagamihara, Kanagawa, Japan
[28] Kobe Univ, Dept Orthopaed Surg, Grad Sch Med, Kobe, Japan
[29] Kochi Univ, Kochi Med Sch, Dept Orthopaed Surg, Nankoku, Kochi, Japan
[30] Kagoshima Univ, Grad Sch Med & Dent Sci, Dept Orthopaed Surg, Kagoshima, Japan
[31] Gunma Univ, Grad Sch Med, Dept Orthopaed Surg, Maebashi, Gunma, Japan
[32] Mie Univ, Grad Sch Med, Dept Orthopaed Surg, Tsu, Mie, Japan
[33] Int Univ Hlth & Welf, Sch Med, Dept Orthopaed Surg, Chiba, Japan
[34] Int Univ Hlth & Welf, Narita Hosp, Dept Orthopaed Surg, Chiba, Japan
[35] Int Univ Hlth & Welf, Mita Hosp, Dept Orthopaed Surg & Spine, Tokyo, Japan
[36] Int Univ Hlth & Welf, Mita Hosp, Spinal Cord Ctr, Tokyo, Japan
[37] Univ Tokyo Hosp, Dept Orthopaed Surg, Tokyo, Japan
[38] Osaka Univ, Dept Orthopaed Surg, Grad Sch Med, Osaka, Japan
[39] Tokai Univ, Dept Orthoped Surg, Sch Med, Surg Sci, Hiratsuka, Kanagawa, Japan
[40] Tokyo Med & Dent Univ, Dept Orthopaed Surg, Tokyo, Japan
[41] Univ Yamanashi, Dept Orthopaed Surg, Kofu, Yamanashi, Japan
[42] Kyoto Univ, Grad Sch Med, Dept Orthopaed Surg, Kyoto, Japan
[43] Univ Toyama, Fac Med, Dept Orthopaed Surg, Toyama, Japan
[44] Oita Univ, Fac Med, Dept Orthopaed Surg, Oita, Japan
[45] Kansai Med Univ Hosp, Dept Orthopaed Surg, Osaka, Japan