title: Recurrence risks for congenital hydrocephalus.
mesh_terms: D004200:Diseases in Twins; D005260:Female; D005817:Genetic Counseling; D006801:Humans; D006849:Hydrocephalus / Q000151:congenital / Q000235:genetics*; D008297:Male; D010375:Pedigree; D011247:Pregnancy; D012306:Risk; D014429:Twins, Dizygotic; D014430:Twins, Monozygotic