_:vb50942906 . _:vb50942906 "url:https://www.ncbi.nlm.nih.gov/pubmed/7241530"^^ . _:vb50942906 . _:vb50942906 "An osteogenesis imperfecta found in a single South African family."^^ . _:vb50942906 . _:vb50942906 . _:vb50942906 .