1. Early diagnosis of exomphalos;Campbell;Lancet,1978
2. Exomphalos, a review of 100 cases;Eckstein;Brit. J. Surg.,1963
3. Somatic anomalies of the umbilicus and anterior abdominal wall;Hutchin;Surg. Gynec. Obstet.,1965
4. Amniotic fluid alpha-fetoprotein elevation with fetal omphalocele and a possible mechanism for its occurrence;King;Amer. J. Obstet. Gynec.,1978
5. Omphalocele and gastroschisis in Sweden 1965–1976;Lindham;Acta Paediat. Scand.,1981