Letter: Unmasking abdominal findings.
D000006:Abdomen, Acute / Q000175:diagnosis* / Q000188:drug therapy; D000698:Analgesia; D006801:Humans; D009270:Naloxone / Q000008:administration & dosage / Q000494:pharmacology*; D009294:Narcotics / Q000627:therapeutic use
D009294:Narcotics; D009270:Naloxone