Machado-Alba, Jorge Enrique, et al. “Severe Anaphylaxis Reaction from Dipyrone Without a History of Hypersensitivity. Case Report”. Colombian Journal of Anesthesiology, vol. 45, no. Supplement, Apr. 2017, pp. 8-11, https://www.revcolanest.com.co/index.php/rca/article/view/434.