(EN) Oswalt ML, Kemp SF, Anaphylaxis: office management and prevention, in Immunol Allergy Clin North Am, vol. 27, n. 2, maggio 2007, pp. 177–91, vi, DOI:10.1016/j.iac.2007.03.004, PMID 17493497.
«Clinically, anaphylaxis is considered likely to be present if any one of three criteria is satisfied within minutes to hours»