[1] Osaka Womens & Childrens Hosp, Dept Bone & Mineral Res, Izumi, Osaka, Japan
[2] Osaka Univ, Dept Oral & Maxillofacial Surg 1, Grad Sch Dent, Suita, Osaka, Japan
[3] Osaka Univ, Dept Pediat, Grad Sch Med, Suita, Osaka, Japan
[4] Iseikai Int Gen Hosp, Ctr Promoting Treatment Intractable Dis, Osaka, Japan