PREVALENCE OF PSYCHOACTIVE SUBSTANCE USE AMONG SECURITY GUARDS AT TERTIARY CARE HOSPITAL: A CROSS-SECTIONAL STUDY. - Mustafa, Ali Burhan; Majeed Babar, Muhammad Zafar; Saleem, Muhammad; Zafar, Urooj; Farooq, Hamza; Munir, Nousheen; Khan, Tuba; Bano, Shahar; Adil, Muhammad Amin (Journal of Pakistan Psychiatric Society, 2024)