title: Opioid substitution to reduce adverse effects in cancer pain management.
authors.forename: P H
authors.initials: PH
authors.lastname: Graham
mesh_terms: D000284:Administration, Oral; D000701:Analgesics, Opioid / Q000008:administration & dosage* / Q000009:adverse effects*; D006801:Humans; D007279:Injections, Subcutaneous; D009325:Nausea / Q000139:chemically induced / Q000517:prevention & control*; D009369:Neoplasms / Q000150:complications*; D010146:Pain / Q000188:drug therapy* / Q000209:etiology
chemical_list: D000701:Analgesics, Opioid