Obstetricians and perinatology.
D000531:Altitude; D000818:Animals; D001724:Birth Weight; D002662:Child Health Services; D003120:Colorado; D004964:Estriol / Q000097:blood; D005260:Female; D005315:Fetal Diseases / Q000175:diagnosis; D049673:History, 20th Century; D006801:Humans; D007224:Infant Care; D007226:Infant Mortality; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases / Q000266:history*; D007234:Infant, Premature; D008991:Monitoring, Physiologic; D007752:Obstetric Labor, Premature / Q000503:physiopathology; D009774:Obstetrics / Q000266:history*; D010102:Oxygen Inhalation Therapy; D011247:Pregnancy; D011248:Pregnancy Complications / Q000503:physiopathology; D011295:Prenatal Care; D012959:Socioeconomic Factors; D014463:Ultrasonography
D004964:Estriol