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