[1] Nagasaki Univ, Sch Med, Dept Human Genet, Nagasaki 852, Japan
[2] Osaka Univ, Fac Med, Dept Biochem, Osaka, Japan
[3] Asahikawa Med Coll, Dept Pediat, Asahikawa, Hokkaido 078, Japan
[4] Asahikawa Med Coll, Dept Publ Hlth, Asahikawa, Hokkaido 078, Japan
[5] Shinshu Univ, Sch Med, Dept Internal Med 3, Nagano, Japan
[6] Shinshu Univ, Sch Med, Dept Med Genet, Nagano, Japan
[7] Shinshu Univ, Sch Med, Div Clin & Mol Genet, Nagano, Japan
[8] Univ Tokyo, Inst Med Sci, Ctr Human Genome, Minato Ku, Tokyo, Japan
[9] Dokkyo Univ, Sch Med, Dept Radiol, Mibu, Tochigi, Japan
[10] Asahigawa Ryoikuen Childrens Hosp Physically Disa, Okayama, Japan
[11] Akita Univ, Sch Med, Dept Orthoped Surg, Akita 010, Japan
[12] Kansal Univ Otokoyama Hosp, Dept Pediat, Kyoto, Japan
[13] Chiba Childrens Hosp, Div Orthoped Surg, Chiba, Japan
[14] Natl Chushin Matsumoto Hosp, Dept Orthoped Surg, Nagano, Japan
[15] Univ Iowa, Dept Pediat & Biol Sci, Iowa City, IA USA