Cristina Coelho, Department of Allergology and Clinical Immunology, Unidade Local de Saúde Gaia/Espinho, Porto, Portugal Cláudia Maçães, Department of Allergology and Clinical Immunology, Unidade Local de Saúde Gaia/Espinho, Porto, Portugal Tomás D. Almeida, Department of Allergology and Clinical Immunology, Unidade Local de Saúde Gaia/Espinho, Porto, Portugal Susana Cadinha, Department of Allergology and Clinical Immunology, Unidade Local de Saúde Gaia/Espinho, Porto, Portugal Arminda Guilherme, Department of Allergology and Clinical Immunology, Unidade Local de Saúde Gaia/Espinho, Porto, Portugal José A. Ferreira, Department of Allergology and Clinical Immunology, Unidade Local de Saúde Gaia/Espinho, Porto, Portugal Isabel Rosmaninho, Department of Allergology and Clinical Immunology, Unidade Local de Saúde Gaia/Espinho, Porto, Portugal