Відправити по sms: The Impact of Digital Technologies on Public Health in Developed and Developing Countries 18th International Conference, ICOST 2020, Hammamet, Tunisia, June 24-26, 2020, Proceedings / edited by Mohamed Jmaiel, Mounir Mokhtari, Bessam Abdulrazak, Hamdi Aloulou, Slim Kallel. [electronic resource] :