title: Congenital malalignment of great toenails in two sets of monozygotic twins.
mesh_terms: D002648:Child; D002675:Child, Preschool; D006214:Hallux; D006801:Humans; D009260:Nail Diseases / Q000209:etiology / Q000235:genetics; D009264:Nails, Malformed; D014427:Twins; D014430:Twins, Monozygotic