Neonatology, then and now.
D004992:Ethics, Medical / Q000266:history; D019317:Evidence-Based Medicine / Q000266:history; D049673:History, 20th Century; D049674:History, 21st Century; D009359:Neonatology / Q000266:history* / Q000639:trends; D009390:Nepal; D009527:Nicaragua; D010678:Philately; D013636:Tanzania; D014481:United States