Bondok, S. M. Y., Hassan, M. M. R., Kader, A. A., Helmi, M. and Ali, H. A. (2022) “COVID-19 risk in patients with substance use disorders at Kuwait addiction treatment center”, International journal of health sciences, 6(S6), pp. 6007–6024. doi: 10.53730/ijhs.v6nS6.11284.