History of the development of Probon, a new minor analgesic.
D000700:Analgesics / Q000266:history*; D005859:Germany, East; D049673:History, 20th Century; D006801:Humans; D006814:Hungary; D011744:Pyrimidinones / Q000627:therapeutic use
D000700:Analgesics; D011744:Pyrimidinones