1. WHO. Tobacco. https://www.who.int/news-room/fact-sheets/detail/tobacco (2022).
2. European Union. Eurostat Statistics Data Browser. https://ec.europa.eu/eurostat/databrowser/view/ISOC_CI_IFP_FU__custom_5093896/default/table?lang=en (2023).
3. Smoking and nicotine dependence in relation to depression, anxiety, and stress in Egyptian adults: A cross-sectional study;El-Sherbiny NA;J Family Community Med,2022
4. The Association of Cigarette Smoking With Depression and Anxiety: A Systematic Review;Fluharty M;Nicotine & Tobacco Research,2017
5. WHO. International Statistical Classification of Diseases and Related Health Problems (ICD-11). https://icd.who.int/en (2019).