1. Cazacu I, Mogosan C, Loghin F. Safety issues of current analgesics: an update. Clujul Med. 1957. 2015;88(2):128–36.
2. IASP Taxonomy – IASP [Internet]. [cited 2016 May 30]. Available from: http://www.iasp‐pain.org/Education/Content.aspx?ItemNumber=1698#Hyperalgesia
3. Benyamin R, Trescot AM, Datta S, Buenaventura R, Adlaka R, Sehgal N, et al. Opioid complications and side effects. Pain Physician. 2008 Mar;11(2 Suppl):S105‐120.
4. Moore N, Pollack C, Butkerait P. Adverse drug reactions and drug‐drug interactions with over‐the‐counter NSAIDs. Ther Clin Risk Manag. 2015;11:1061–75.
5. Cabral DMC, Bracher ESB, Depintor JDP, Eluf‐Neto J. Chronic pain prevalence and associated factors in a segment of the population of São Paulo City. J Pain Off J Am Pain Soc. 2014 Nov;15(11):1081–91.