title: Patients with chronic pain deserve choice of constant medication.
mesh_terms: D000700:Analgesics / Q000008:administration & dosage*; D002908:Chronic Disease; D004334:Drug Administration Schedule; D006801:Humans; D009369:Neoplasms / Q000150:complications*; D010146:Pain / Q000188:drug therapy*
chemical_list: D000700:Analgesics