Stigma toward substance use disorders: a multinational perspective and call for action - El Hayek, Samer; Foad, Wael; de Filippis, Renato; Ghosh, Abhishek; Koukach, Nadine; Mahgoub Mohammed Khier, Aala; Pant, Sagun Ballav; Padilla, Vanessa; Ramalho, Rodrigo; Tolba, Hossameldin; Shalbafan, Mohammadreza (Frontiers in Psychiatry, 2024)