Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) ISDALE IC,Femoral head destruction in rheumatoid arthritis and osteo-arthritis : A clinical review of 27 cases,Ann Rheum Dis,,,1962,21,,23-30,https://cir.nii.ac.jp/crid/1570291226422936960,