[1] Kanazawa Univ, Grad Sch Med Sci, Dept Orthoped Surg, Ishikawa 9208641, Japan
[2] Toyama Prefectural Cent Hosp, Dept Orthoped Surg, Toyama 9308550, Japan
[3] Nagoya Univ, Grad Sch Med, Dept Orthoped Surg, Nagoya 4668550, Japan
[4] Univ Tsukuba, Fac Med, Dept Orthoped Surg, Tsukuba, Ibaraki 3058575, Japan
[5] Univ Tsukuba, Grad Sch Comprehens Human Sci, Dept Orthoped Surg, Tsukuba, Ibaraki 3058575, Japan
[6] Ibaraki Seinan Med Ctr Hosp, Dept Orthoped Surg, Tsukuba, Ibaraki 3060433, Japan
[7] Natl Hosp Org Murayama Med Ctr, Dept Orthoped Surg, Tokyo 2080011, Japan
[8] Keio Univ, Dept Orthoped Surg, Sch Med, 35 Shinanomachi, Tokyo 1608582, Japan
[9] Chiba Univ, Grad Sch Med, Dept Orthoped Surg, Chiba 2608670, Japan
[10] Univ Fukui, Fac Med Sci, Dept Orthoped & Rehabil Med, Fukui 9101193, Japan
[11] Hamamatsu Univ, Dept Orthoped Surg, Sch Med, Hamamatsu, Shizuoka 4313192, Japan
[12] Nagoya Kyoritsu Hosp, Dept Orthoped Surg, Nagoya, Aichi 4540933, Japan
[13] Sapporo Med Univ, Dept Orthoped Surg, Sapporo 0608543, Japan
[14] Matsuda Orthoped Mem Hosp, Dept Orthoped Surg, Sapporo 0010018, Japan
[15] Yamaguchi Univ, Dept Orthoped Surg, Grad Sch Med, Yamaguchi 7558505, Japan
[16] Shinshu Univ, Dept Orthoped Surg, Sch Med, Nagano 3908621, Japan
[17] Kyoto Prefectural Univ Med, Grad Sch Med Sci, Dept Orthoped, Kawaramachi Hirokoji, Kyoto 6028566, Japan
[18] Saiseikai Shiga Hosp, Dept Orthoped, Shiga 5203046, Japan
[19] Tohoku Univ, Dept Orthoped Surg, Grad Sch Med, Sendai, Miyagi 9808574, Japan
[20] Kyushu Univ, Grad Sch Med Sci, Dept Orthoped Surg, Fukuoka 8128582, Japan
[21] Nagoya City Univ, Dept Orthoped Surg, Grad Sch Med Sci, Nagoya 4678601, Japan
[22] Nihon Univ Hosp, Dept Orthoped Surg, Tokyo 1018393, Japan
[23] Nihon Univ, Dept Orthoped Surg, Sch Med, Tokyo 1738610, Japan
[24] Kawasaki Med Sch, Dept Orthoped Traumatol & Spine Surg, Okayama 7010192, Japan
[25] Osaka Metropolitan Univ, Dept Orthoped Surg, Grad Sch Med, Osaka 5458585, Japan
[26] Kitasato Univ, Dept Orthoped Surg, Sch Med, 1 15 1, Minato, Kanagawa 2520374, Japan
[27] Kobe Univ, Dept Orthoped Surg, Grad Sch Med, Kobe 6500017, Japan
[28] Kochi Univ, Kochi Med Sch, Dept Orthoped Surg, Nankoku 7838505, Japan
[29] Kagoshima Univ, Grad Sch Med & Dent Sci, Dept Orthoped Surg, Kagoshima 8908520, Japan
[30] Gunma Univ, Dept Orthoped Surg, Grad Sch Med, 3 39 22 Showa, Maebashi 3718511, Japan
[31] Mie Univ, Dept Orthoped Surg, Grad Sch Med, Mie 5148507, Japan
[32] Int Univ Hlth & Welf, Sch Med, Dept Orthoped Surg, Chiba 2860124, Japan
[33] Int Univ Hlth, Welf Narita Hosp, Dept Orthoped Surg, Chiba 2860124, Japan
[34] Int Univ Hlth, Welf Mita Hosp, Spinal Cord Ctr, Dept Orthoped Surg & Spine, Tokyo 1088329, Japan
[35] Univ Tokyo Hosp, Dept Orthoped Surg, Tokyo 1138655, Japan
[36] Osaka Univ, Dept Orthoped Surg, Grad Sch Med, Osaka 5650871, Japan
[37] Tokai Univ, Dept Orthoped Surg, Surg Sci, Sch Med, Shibuya, Kanagawa 2591193, Japan
[38] Tokyo Med & Dent Univ, Dept Orthoped Surg, Yushima 1138519, Japan
[39] Univ Yamanashi, Dept Orthoped Surg, Yamanashi 4093898, Japan
[40] Kyoto Univ, Grad Sch Med, Dept Orthoped Surg, Kyoto 6068501, Japan
[41] Univ Toyama, Fac Med, Dept Orthoped Surg, Toyama 9300194, Japan
[42] Oita Univ, Fac Med, Dept Orthoped Surg, Oita 8795593, Japan
[43] Kansai Med Univ Hosp, Dept Orthoped Surg, Osaka 5731191, Japan