Giving meperidine for pain: should it be so mechanical?
D000701:Analgesics, Opioid / Q000627:therapeutic use*; D006801:Humans; D008614:Meperidine / Q000627:therapeutic use*; D010148:Intractable Pain / Q000188:drug therapy*
D000701:Analgesics, Opioid; D008614:Meperidine