_:vb50940343 "url:https://pubmed.ncbi.nlm.nih.gov/26149975/"^^ . _:vb50940343 . _:vb50940343 . _:vb50940343 "A nonsyndromic congenital nail disorder that is characterized by nails that are abnormally thin and concave from side to side, with turned up edges."^^ . _:vb50940343 . _:vb50940343 .