Participation of 10 Centers (CH Coimbra, CH Vila Nova de Gaia, H Sta Maria, H Egas Moniz, CH Vila Real / Peso da Régua, HSM Braga, IPO Porto, H Pulido Valente, CH Cova da Beira, HSM Guarda)
Presented at the 11th World Conference on Lung Cancer, 3-6 July 2005, Barcelona, Spain (preliminary results)
Participation of 18 Centers (H. Santa Maria, CH Coimbra, H S.João, CH Vila Nova Gaia, IPO Porto, HD Faro, IDP Aveiro, HD Santarém, H ES Évora, CH Trás os Montes and Alto Douro, H Egas Moniz, H Garcia da Orta, HJF Beja, HSM Braga, CH Setúbal, IPO Lisboa, H Pulido Valente, CH Cova da Beira)
Participation of 7 Centers (CH Coimbra, IPO Lisbon, H Santa Maria, CH Vila Nova de Gaia / Espinho, H São Bernardo, H São João, CH Trás-os-Montes and Alto Douro)
Participation of 9 Centers (CH VN Gaia, CH Trás os Montes and Alto Douro, H Braga, H Aveiro, CH Santa Maria, CH Coimbra, CH between Douro and Vouga, IPO Lisbon, H S: João)