1. Hospital Clínico de la Facultad de Veterinaria; Universidad Complutense de Madrid; Avenida Puerta de Hierro s/n 28040 Madrid Spain
2. Alergovet; Valentín Beato 24 28038 Madrid Spain
3. Inmunotek, S.L; Punto Mobi 5 Alcalá de Henares 28805 Madrid Spain
4. Division of Allergy and Immunology; James A. Haley V.A. Medical Center; University of South Florida College of Medicine; 13000 Bruce B. Downs Blvd (111D) Tampa FL 33612 USA