Natacha Santos1, Pedro Morais Silva2, Maria Antónia São Bráz3. 1. Allergy and Clinical Immunology Department, Centro Hospitalar do Algarve, Portimão, Portugal. Electronic address: natachalsantos@gmail.com. 2. Allergy and Clinical Immunology Department, Centro Hospitalar do Algarve, Portimão, Portugal. 3. Allergy and Clinical Immunology Department, Centro Hospitalar do Algarve, Faro, Portugal.