The undertreatment of pain.
D000701:Analgesics, Opioid / Q000627:therapeutic use*; D001291:Attitude of Health Personnel; D006801:Humans; D010146:Pain / Q000188:drug therapy*; D010149:Postoperative Pain / Q000188:drug therapy; D011379:Prognosis
D000701:Analgesics, Opioid