Determinants of underdiagnosis of COPD in national and international surveys by Lamprecht, B, Joan, S, Studnicka, M, Kaiser, B, Vanfleteren, L, Gnatiuc, L, Lamprecht, P, Miravitlles, M, García-Rio, F, Akbari, K, Julio, A, Menezes, A, Perez-Padilla, R, Montes de Oca, M, Torres-Duque, C, Caballero, A, González-García, M, Buist, S

Altitude and COPD prevalence: analysis of the PREPOCOL-PLATINO-BOLD-EPI-SCAN study by Horner, A, Soriano, J, Puhan, M, Studnicka, M, Kaiser, B, Vanfleteren, L, Gnatiuc, L, Burney, P, Miravitlles, M, García-Rio, F, Ancochea, J, Menezes, A, Perez-Padilla, R, Oca, d, Torres-Duque, C, Caballero, A, González-García, M, Buist, S, Flamm, M, Lamprecht, B