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;

Prevention measures for COVID-19 in retail food stores in Braga, Portugal J. Precioso; C. Samorinha; R. Alves;

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