Metacognition Mediates the Association Between Drug Dependence and Sleep Disturbances: Cross-Sectional Findings Among Khat-Chewing Polysubstance Users - Manzar, Md. Dilshad; Kashoo, Faizan Z.; Hassen, Hamid Yimam; Albougami, Abdulrhman; Noohu, Majumi M.; Salahuddin, Mohammed; Shah, Showkat Ahmad; Mir, Shabir Ahmad; Pandi-Perumal, Seithikurippu R.; BaHammam, Ahmed S. (International Journal of Mental Health and Addiction, 2024)