Issue 2 - “Update on adverse respiratory effects of indoor air pollution” Part 1): Indoor air pollution and respiratory diseases: A general update and a Portuguese perspective J.C. Rufo, I. Annesi-Maesano, P. Carreiro-Martins, A. Moreira, A.C. Sousa, M.R. Pastorinho, N. Neuparth, L. Taborda-Barata

Issue 2 - “Update on adverse respiratory effects of indoor air pollution”. Part 2): Indoor air pollution and respiratory diseases: Perspectives from Italy and some other GARD countries G. Sarno, I. Stanisci, S. Maio, S. Williams, E.M. Khoo, S.G. Diaz, E.V. Ponte, L.T.T. Lan, T. Soronbaev, D. Behera, S. Tagliaferro, S. Baldacci, G. Viegi

A call for a national strategy for indoor air quality J.C. Winck, S.M. Almeida, G. Correia, M.F. Gabriel, G. Marques, M.G. Silva