Ranitidine to prevent recurrence of duodenal ulcer.
P A
PA
Merkel
K A
KA
Schulman
D004381:Duodenal Ulcer / Q000517:prevention & control*; D006801:Humans; D011899:Ranitidine / Q000627:therapeutic use*; D012008:Recurrence
D011899:Ranitidine