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Table 1 Distribution of 25 selected major birth defects according to the affected system

From: Major birth defects in the Brazilian side of the triple border: a population-based cross-sectional study

System Birth defect
Central nervous system Anencephalus
Hydrocephalus
Holoprosencephaly
Spina bifida
Ear Anophthalmia
Anotia/microtia
Cardiovascular Transposition of the great arteries
Tetralogy of Fallot
Left heart hypoplasia
Coarctation of the aorta
Cleft Lip and/or Palate (CLP) Cleft lip/palate/lip and/or palate
Gastrointestinal Esophageal atresia/stenosis with or without fistula
Small intestine atresia/stenosis
Anorectal atresia/stenosis
Genitourinary Hypospadias
Undetermined sex
Renal agenesia
Cystic kidney
Musculoskeletal systems Limb reduction defects
Diaphragmatic hernia
Omphalocele
Gastroschisis
Chromosomal anomalies Patau syndrome
Edwards syndrome
Down syndrome