title: [Weak evidence for morphine in chronic pain].
authors.affiliation: hakan.samuelsson@vgregion.se
authors.forename: Håkan
authors.initials: H
authors.lastname: Samuelsson
mesh_terms: D000701:Analgesics, Opioid / Q000627:therapeutic use*; D002908:Chronic Disease; D019317:Evidence-Based Medicine; D006801:Humans; D009020:Morphine / Q000627:therapeutic use*; D010146:Pain / Q000188:drug therapy*; D017410:Practice Guidelines as Topic
chemical_list: D000701:Analgesics, Opioid; D009020:Morphine