title: Conjoined twins: nosology and congenital malformations.
mesh_terms: D004200:Diseases in Twins / Q000235:genetics*; D005260:Female; D006330:Heart Defects, Congenital / Q000235:genetics*; D006801:Humans; D007231:Infant, Newborn; D008954:Models, Biological; D011247:Pregnancy; D014428:Twins, Conjoined / Q000196:embryology / Q000503:physiopathology*; D014430:Twins, Monozygotic