[1] Univ Thessaly, Sch Hlth Sci, Fac Med, Dept Immunol & Histocompatibil, Larisa, Greece
[2] Semmelweis Univ, Hungarian Angioedema Ctr, Dept Internal Med 3, H-1085 Budapest, Hungary
[3] Navy Hosp, Dept Allergol, Athens, Greece
[4] Univ Med & Pharm, Allergy & Lung Funct Off, Targu Mures, Romania
[5] Charite, Dept Dermatol & Allergy, D-13353 Berlin, Germany
[6] Hungarian Natl Blood Transfus Serv, Lab Mol Diagnost, Budapest, Hungary