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 3¿The occupational burden of respiratory diseases, an update N. Murgia; M. Akgun; P.D. Blanc; J.T. Costa; S. Moitra; X. Muñoz; K. Toren; A.J. Ferreira;

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;