A reexamination on parental age effect on the occurrence of new mutations for achondroplasia.
D000130:Achondroplasia / Q000235:genetics*; D000293:Adolescent; D000328:Adult; D005260:Female; D006801:Humans; D008423:Maternal Age; D008875:Middle Aged; D009154:Mutation; D010331:Paternal Age