Columbia subject headings:
Fetus--Abnormalities.
Fetus--Diseases.
Fetus--Pathophysiology.
Newborn infants--Diseases.
Pediatric pathology.
Harvard subject headings:
Fetus--Abnormalities
Fetus--Diseases
Fetus--Pathophysiology
Newborn infants--Diseases.
Pediatric pathology.
Princeton subject headings: