Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) SINGER GC,Coracoid transposition for recurrent anterior instability of the shoulder. A 20-year follow-up study,J Bone Joint Surg,,,1995,77,,73-76,https://cir.nii.ac.jp/crid/1573668924852170112,