Issue 1 - ¿Update on adverse respiratory effects of outdoor air pollution¿ Part 2): Outdoor air pollution and respiratory diseases: Perspectives from Angola, Brazil, Canada, Iran, Mozambique and Portugal A.C. Sousa; M.R. Pastorinho; M.R. Masjedi; M. Urrutia-Pereira; M. Arrais; E. Nunes; T. To; A.J. Ferreira; C. Robalo-Cordeiro; C. Borrego; J.P. Teixeira; L. Taborda-Barata;

Practice of spirometry among physicians caring for children with asthma in Portugal ¿ The EspiroPed survey C. Constant; J. Cosme; R.M. Fernandes; P. Fonte; J.A. Fonseca; C. Alves; T. Bandeira;

Post-pandemic respiratory infection trends among Northern Chinese children: Challenges and responses Kun Wang; Zhuoheng Lv; Shuofeng Li; Hang Yi;