[1] Univ Porto, Fac Med, Ctr Hlth Technol & Serv Res CINTESIS, Dept Community Med Informat & Hlth Decis Sci MEDC, Porto, Portugal
[2] Univ Porto, Fac Med,Inst & Hosp CUF, Ctr Hlth Technol & Serv Res CINTESIS,Polytech Ins, Dept Cardiovasc & Resp Sci,Porto Hlth Sch,Allergy, Porto, Portugal
[3] Univ Porto, Ctr Hlth Technol & Serv Res CINTESIS, Dept Community Med Informat & Hlth Decis Sci MEDC, Fac Med,Allergy Unit,Inst & Hosp CUF, Porto, Portugal
[4] Complejo Hosp Univ Santiago, Serv Alergia, Santiago De Compostela, Spain
[5] Hosp Univ Roman y Cajal, Serv Alergia, Madrid, Spain
[6] Ctr Hosp & Univ Coimbra, Serv Imunoalergol, Coimbra, Portugal
[7] Ctr Hosp Leiria, Imunoalergol, Leiria, Portugal
[8] Ctr Hosp Univ Lisboa Cent, Hosp Dona Estefania, Serv Imunoalergol, Lisbon, Portugal
[9] Ctr Hosp Univ Lisboa Cent, Hosp Dona Estefania, Serv Imunoalergol,Fac Ciencias Med, Pathophysiol,CHRC,Environm Hlth Res Grp,CEDOC,NOV, Lisbon, Portugal
[10] Hosp Beatriz Angelo, Serv Pneumol, Loures, Portugal
[11] Hosp Senhora da Oliveira, Serv Pediat, Guimaraes, Portugal
[12] Ctr Hosp & Univ Coimbra, Serv Pneumol, Coimbra, Portugal
[13] Ctr Hosp Univ Lisboa Cent, Hosp Santa Marta, Serv Pneumol, Lisbon, Portugal
[14] Hosp Pedro Hispano, Serv Pediat, Unidade Local Saude Matosinhos, Matosinhos, Portugal
[15] Ctr Hosp Univ Lisboa Norte, Hosp Santa Maria, Serv Imunoalergol, Lisbon, Portugal
[16] Hosp Amato Lusitano, Serv Imunoalergol, Unidade Local Saude Castelo Branco, Castelo Branco, Portugal
[17] Ctr Hosp Univ Algarve, Serv Imunoalergol, Portimao, Portugal
[18] Hosp Garcia de Orta, Serv Pneumol, Almada, Portugal
[19] Serv Saude Regiao Autonoma Madeira, Serv Imunoalergol, Funchal, Portugal
[20] Hosp Divino Espirito Santo, Unidade Imunoalergol, Ponta Delgada, Portugal
[21] Ctr Hosp Medio Ave, Serv Pediat, Unidade Hosp Famalicao, Vila Nova de Famalicao, Portugal
[22] Ctr Hosp Barreiro Montijo, Hosp Nossa Senhora Rosario, Serv Pneumol, Barreiro, Portugal
[23] Ctr Hosp Vila Nova de Gaia Espinho, Serv Imunoalergol, Unidade 1, Vila Nova De Gaia, Portugal
[24] Hosp Pedro Hispano, Unidade Local Saude Matosinhos, Unidade Imunoalergol, Matosinhos, Portugal
[25] Ctr Hosp Univ Sao Joao, Serv Imunoalergol, Porto, Portugal
[26] Ctr Hosp Univ Porto, Ctr Materno Infantil Norte, Serv Pediat, Porto, Portugal
[27] Ctr Hosp Univ Cova Beira, Hosp Pero Covilha, Serv Imunoalergol, Covilha, Portugal
[28] Ctr Hosp Tondela Viseu, Hosp Sao Teotonio, Serv Pediat, Viseu, Portugal
[29] Ctr Hosp Vila Nova de Gaia Espinho, Serv Pneumol, Unidade 1, Vila Nova De Gaia, Portugal
[30] Univ Porto, Ctr Hlth Technol & Serv Res CINTESIS, Dept Community Med Informat & Hlth Decis Sci MEDC, Fac Med,Allergy Unit,Inst & Hosp CUF MEDIDA Med E, Porto, Portugal