Opielak, Grzegorz, Mikołaj Cyganok, Jacek Zawiślak, Maciej Putowski, Marta Podgórniak, and Ryszard Maciejewski. “The Age of Alkohol Initiation Among Patients Treated for Addiction”. Current Problems of Psychiatry 16, no. 1 (June 26, 2015): 48–54. Accessed August 25, 2025. https://czasopisma.umlub.pl/cpp/article/view/2027.