The prevalence and sociodemographic determinants of tobacco and nicotine use among students in healthcare disciplines in Saudi Arabian universities: a cross-sectional survey von Aldhahir, AM, Siraj, RA, Alqarni, AA, Alqahtani, JS, Alyami, MM, Majrshi, M, Alwafi, H, Alqahtani, MM, Monshi, SS, Hamdan Al-Zalabani, A, Alanazi, AM

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