title: Costa Rica marks improvement in morphine consumption.
authors.forename: Isaias G
authors.initials: IG
authors.lastname: Salas-Herrera
authors.forename: Rigoberto
authors.initials: R
authors.lastname: Monestel
mesh_terms: D003364:Costa Rica; D004363:Drug Utilization; D006801:Humans; D009020:Morphine / Q000627:therapeutic use*; D010166:Palliative Care / Q000706:statistics & numerical data*
chemical_list: D009020:Morphine