[1] Hosp Clin Barcelona, Serv Neumol & Alergia Resp, Unidad Alergia, Barcelona 08036, Spain
[2] Inst Municipal Invest Med, Barcelona, Spain
[3] Hosp Basurto, Serv Alergol, Bilbao, Spain
[4] 3D Hlth Res, Barcelona, Spain
[5] Hosp Clin Univ Lozano Blesa, Serv Alergia, Zaragoza, Spain
[6] Clin Dr Lobaton, Cadiz, Spain
[7] Hosp Badalona Germans Trias & Pujol, Unidad Alergia, Badalona, Spain
[8] Uriah & Co, Barcelona, Spain
[9] Hosp Clin Barcelona, Serv ORL, Unidad Rinolog, Barcelona, Spain
[10] Hosp El Tomillar, Unidad Alergia, Seville, Spain
[11] Fdn Jimenez Diaz, Madrid, Spain
[12] Hosp Tortosa Verge Cinta, Tortosa, Spain
[13] Hosp Clin Barcelona, Barcelona, Spain
[14] Hosp Gen Valle Hebron, Barcelona, Spain
[15] Vilanova la Geltru, Barcelona, Spain
[16] Hosp Dr Josep Trueta, Valencia, Spain
[17] Inst Univ Dexeus, Barcelona, Spain
[18] Univ Hosp, Salamanca, Spain
[19] Hosp El Bierzo Ponferrada, Leon, Spain
[20] Hosp Gen Elche, Elche, Spain
[21] Complejo Hosp Ciudad Jaen, Jaen, Spain
[22] Hosp Virgen Macarena, Seville, Spain
[23] Hosp Gral Castellon, Consulta Alergia, Castellon de La Plana, Spain
[24] Hosp Villarreal, Valencia, Spain
[25] Hosp El Tomillar, Seville, Spain
[26] Hosp Gen Gregorio Maranon, Madrid, Spain
[27] Clin Platon, Barcelona, Spain
[28] Clin Quiron, Barcelona, Spain
[29] Hosp Viladecans, Barcelona, Spain
[30] Hosp Gral Vic, Barcelona, Spain
[31] Hosp Virgen Camino, Pamplona, Spain