Rasmussen, E. R., Valente de Freitas, P. and Bygum, A. (2015) “Urticaria and Prodromal Symptoms Including Erythema Marginatum in Danish Patients with Hereditary Angioedema”, Acta Dermato-Venereologica, 96(3), pp. 373–376. doi: 10.2340/00015555-2233.