Hereditary Angioedema Without C1 Inhibitor Deficiency: Observation Of Patients Homozygous For FXII GENE Mutation - Christiane Stieber; Camila Lopes Veronez; Nathália Cagini; Elisabete Cordeiro; Anete Sevciovic Grumach; Rosemeire Navickas Constantino-Silva; João Bosco Pesquero; Sven Cichon (2014)