[Error in peptic ulcer surgery or in calculation?].
D005743:Gastrectomy / Q000401:mortality; D005860:Germany, West; D006801:Humans; D010437:Peptic Ulcer / Q000601:surgery*; D014628:Vagotomy / Q000401:mortality
Irrweg in der Ulkus-Chirurgie oder in der Rechnung?