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 - Rufo, JC; Annesi-Maesano, I; Carreiro-Martins, P; Moreira, A; Sousa, AC; Pastorinho, MR; Neuparth, N; Taborda-Barata, L (2023)