Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) RYAN MG,One-stage treatment of congenital dislocation of the hip in children three to ten years old : functional and radiographic results,J Bone Joint Surg Am.,,,1998,80,,336-344,https://cir.nii.ac.jp/crid/1570291225051690624,