Al Abri, Mahmood Z., Mohamed A.H. Farag, Asaad S. Al Mosawi, and Salah T. Al Awaidy. “Socio-Demographic Characteristics and Patterns of Substance Use Disorder in Oman : A Retrospective Study of the National Surveillance Programme Between 2004 and 2018”. Sultan Qaboos University Medical Journal [SQUMJ] 20, no. 4 (December 28, 2020): e296–303. Accessed March 8, 2021.