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