Smoking behavior and secondhand smoke exposure among university students in northern Portugal: Relations with knowledge on tobacco use and attitudes toward smoking R.F. Alves; J. Precioso; E. Becoña;

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

Unsupervised physical activity interventions for people with COPD: A systematic review and meta-analysis C. Paixão; V. Rocha; D. Brooks; A. Marques;