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Oswalt ML, Kemp SF (May 2007). „Anaphylaxis: office management and prevention”. Immunol Allergy Clin North Am27 (2): 177–91, vi. DOI:10.1016/j.iac.2007.03.004. PMID17493497. »Clinically, anaphylaxis is considered likely to be present if any one of three criteria is satisfied within minutes to hours«