title: Opioid analgesics.
authors.affiliation: Instituto Nacional de Cancerología, Colonia Sector XVI, Delegación Tlalpan, CP 14080, México DF, México. Electronic address: srallendep@incan.edu.mx.
authors.forename: Silvia
authors.initials: S
authors.lastname: Allende-Pérez
authors.affiliation: Department of Pain Medicine, National Institute of Medical Sciences and Nutrition Salvador Zubirán, Tlalpan, Ciudad de México, DF, Mexico.
authors.forename: Alfredo
authors.initials: A
authors.lastname: Covarrubias-Gomez
mesh_terms: D000700:Analgesics / Q000627:therapeutic use; D000701:Analgesics, Opioid; D006801:Humans; D010146:Pain / Q000188:drug therapy*
chemical_list: D000700:Analgesics; D000701:Analgesics, Opioid