Pedersen, L; Fredheim, OMS (2015). "Opioids for Chronic Noncancer Pain: Still No Evidence for Superiority of Sustained-Release Opioids". Clinical Pharmacology & Therapeutics. 97 (2): 114–115. doi:10.1002/cpt.26. ISSN0009-9236. PMID25670511. S2CID5603973. Last reviewed on 11/18/2015
Pedersen, L; Fredheim, OMS (2015). "Opioids for Chronic Noncancer Pain: Still No Evidence for Superiority of Sustained-Release Opioids". Clinical Pharmacology & Therapeutics. 97 (2): 114–115. doi:10.1002/cpt.26. ISSN0009-9236. PMID25670511. S2CID5603973. Last reviewed on 11/18/2015
Pedersen, L; Fredheim, OMS (2015). "Opioids for Chronic Noncancer Pain: Still No Evidence for Superiority of Sustained-Release Opioids". Clinical Pharmacology & Therapeutics. 97 (2): 114–115. doi:10.1002/cpt.26. ISSN0009-9236. PMID25670511. S2CID5603973. Last reviewed on 11/18/2015
Pedersen, L; Fredheim, OMS (2015). "Opioids for Chronic Noncancer Pain: Still No Evidence for Superiority of Sustained-Release Opioids". Clinical Pharmacology & Therapeutics. 97 (2): 114–115. doi:10.1002/cpt.26. ISSN0009-9236. PMID25670511. S2CID5603973. Last reviewed on 11/18/2015