Omeprazole v ranitidine.
Bate
C M
CM
D004381:Duodenal Ulcer / Q000188:drug therapy*; D006801:Humans; D009853:Omeprazole / Q000627:therapeutic use*; D011899:Ranitidine / Q000627:therapeutic use*
D011899:Ranitidine; D009853:Omeprazole