[1] Jikei Univ, Sch Med, Dept Surg, Katsushika Med Ctr,Katsushika Ku, 6-41-2 Aoto, Tokyo 1258506, Japan
[2] Teikyo Univ, Sch Med, Dept Hyg & Publ Hlth, Itabashi Ku, Kaga2-11-1, Tokyo 1738606, Japan
[3] Fukuoka Wajiro Hosp, Higashi Ku, 2-2-75 Wajirogaoka, Fukuoka 8110213, Japan
[4] Kumamoto Univ, Dept Breast & Endocrine Surg, Chuo Ku, 1-1-1 Honjo, Kumamoto 8608556, Japan
[5] Mie Univ, Grad Sch Med, Dept Breast Surg, 2-174 Edobashi, Tsu, Mie 5148507, Japan
[6] Tokushima Univ, Dept Surg, Kuramoto 3-18-15, Tokushima, Tokushima 7708503, Japan
[7] Dokkyo Med Univ, Dept Cardiac & Vasc Surg, 880 Kitakobayashi, Mibu, Tochigi 3210293, Japan
[8] Kyushu Univ, Grad Sch Med Sci, Dept Pediat Surg, Higashi Ku, 3-1-1 Maidashi, Fukuoka, Fukuoka 8128582, Japan
[9] Dokkyo Med Univ, Koshigaya Hosp, Dept Surg, 2-1-50 Minami Koshigaya, Koshigaya, Saitama 3438555, Japan
[10] Tokyo Womens Med Univ, Dept Cardiovasc Surg, Shinjuku Ku, 8-1 Kawada, Tokyo 1628666, Japan
[11] Univ Tokyo, Dept Gastrointestinal Surg, Grad Sch Med, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1138655, Japan
[12] Kochi Univ, Dept Surg, Kochi Med Sch, Okocho, Nankoku, Kochi 7838505, Japan
[13] Tokai Univ, Tokyo Hosp, Dept Surg, Shibuya Ku, 1-2-5 Yoyogi, Tokyo 1510053, Japan
[14] Hokkaido Univ Hosp, Breast Surg, Kita Ku, Kita 14 Nishi 5, Sapporo, Hokkaido 0608648, Japan
[15] Natl Ctr Global Hlth & Med, Shinjuku Ku, 1-21-1 Toyama, Tokyo 1628655, Japan
[16] Fujita Hlth Univ, Dept Surg, 1-98 Denngakugakubo Kutsukake, Toyoake, Aichi 4701192, Japan