[1] Hosp Clin Barcelona, ENT Dept, Rhinol Unit, Barcelona, Catalonia, Spain
[2] Hosp Clin Barcelona, ENT Dept, Smell Clin, Barcelona, Catalonia, Spain
[3] Univ Barcelona, CIBERES, IDIBAPS, Clin & Expt Resp Immunoallergy, Barcelona, Catalonia, Spain
[4] Hosp Univ Jerez, UGC ORL, Rhinol & Asthma Unit, Cadiz, Spain
[5] Univ S Florida, Coll Med, Joy McCann Culverhouse Chair Allergy & Immunol, Div Allergy & Immunol, Tampa, FL 33620 USA