[1] Hosp Cent Cruz Roja, Allergy Unit, Madrid, Spain
[2] Hosp Cent Cruz Roja, Allergy Anesthesia Unit, Madrid, Spain
[3] Hosp Cent Cruz Roja, Anesthesia Unit, Madrid, Spain
[4] Malaga Reg Univ Hosp IBIMA, Allergy Unit, Malaga, Spain
[5] Hosp Univ Bellvitge IDIBELL, Internal Med Dept, Allergy Unit, Lhospitalet De Llobregat, Spain
[6] Clin Univ Navarra, Allergy & Clin Immunol Dept, Navarra, Spain
[7] Univ Hosp Ramon y Cajal, Allergy Unit, Madrid, Spain
[8] Univ Hosp Gregorio Maranon, Allergy Unit, Madrid, Spain
[9] Univ Hosp La Princesa, Anesthesia Unit, Madrid, Spain
[10] Salamanca Univ Hosp IBSAL, Allergy Unit, Antiguo Edificio Maternidad, Salamanca 37007, Spain