Issue 1 - ¿Update on adverse respiratory effects of outdoor air pollution¿. Part 1): Outdoor air pollution and respiratory diseases: A general update and an Italian perspective S. De Matteis; F. Forastiere; S. Baldacci; S. Maio; S. Tagliaferro; S. Fasola; G. Cilluffo; S. La Grutta; G. Viegi;

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;

Single breath nitrogen test as predictor of lung function decline and COPD over an 8-year follow-up F. Pistelli; D.L. Sherrill; F. Di Pede; S. Baldacci; M. Simoni; S. Maio; L. Carrozzi; G. Viegi;