title: Non-steroidal anti-inflammatory drugs and perforated peptic ulcer.
mesh_terms: D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000008:administration & dosage / Q000627:therapeutic use*; D006801:Humans; D008875:Middle Aged; D010439:Peptic Ulcer Perforation / Q000188:drug therapy*
chemical_list: D000894:Anti-Inflammatory Agents, Non-Steroidal