[1] Hosp Santa Creu & Sant Pau, Dept Resp Med, Barcelona, Spain
[2] Univ Autonoma Barcelona, Inst Invest Biomed St Pau IIB St Pau, Dept Med, Barcelona, Spain
[3] Hosp Univ Gran Canaria Doctor Negrin Las Palmas d, Dept Resp Med, Las Palmas Gran Canaria, Spain
[4] Ctr Salud Javier Saenz de Buruaga, Bilbao, Spain
[5] Hosp Reg Univ Malaga, Dept Allergy, Malaga, Spain
[6] Hosp Univ Espases IdISBa, Dept Resp Med, Mallorca, Spain
[7] CIBERES, Mallorca, Spain
[8] Hosp Santa Creu & Sant Pau, Serv Pneumol & Allergia, C St Antoni M Claret 167, E-08025 Barcelona, Spain
[9] Hosp Univ Virgen Macarena, Seville, Spain
[10] Hosp Virgen Salud, Toledo, Spain
[11] Hosp Gen Univ Morales Meseguer, Murcia, Spain
[12] Hosp Univ Virgen Victoria, Malaga, Spain
[13] Hosp Univ Ntra Sra Candelaria, Malaga, Spain
[14] Hosp Lliria, Valencia, Spain
[15] Hosp Univ Virgen Macarena, Seville, Spain
[16] Hosp Virgen Salud, Toledo, Spain
[17] Ctr Salud Natahoyo, Gijon, Spain
[18] Hosp Univ Ntra Sra Candelaria, Gijon, Spain
[19] Hosp Comarcal Laredo, Seville, Spain
[20] Hosp Valle De Hebron, Barcelona, Spain
[21] Hosp Abente & Lago, La Coruna, Spain
[22] Hosp Gen Univ Ciudad Real, Ciudad Real, Spain
[23] Hosp Dr Jose, Ciudad Real, Spain
[24] Hosp Valle De Hebron, Barcelona, Spain
[25] Hosp Univ Virgen Victoria, Malaga, Spain
[26] Hosp Gen Univ Morales Meseguer, Murcia, Spain
[27] Hosp Univ Vic, Vic, Spain
[28] Hosp Gen Univ Castellon, Castellon de La Plana, Spain
[29] Ctr Salud VERA, Vera, Spain
[30] Hosp Univ Virgen Victoria, Malaga, Spain