title: [The 1990 Theodor Frerich Prize].
mesh_terms: D001363:Awards and Prizes; D003110:Colonic Neoplasms / Q000266:history; D003111:Colonic Polyps / Q000266:history; D005858:Germany; D049673:History, 20th Century; D006801:Humans; D011230:Precancerous Conditions / Q000266:history
vernacular_title: Theodor-Frerichs-Preis 1990.