Al Abri, M. Z., Farag, M. A., Al Mosawi, A. S. and Al Awaidy, S. T. (2020) “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(4), pp. e296–303. doi: 10.18295/squmj.2020.20.04.004.