Perveen, A., R. K. B. A. W. Khan, M. A. Shahadan, H. B. Hamzah, N. A. Hidayah Abas, and A. M. Khan. “Prevalence of Psychological Disorders Among Patients Attending Community Health Centers, Perak, Malaysia”. Indian Journal of Community Health, vol. 29, no. 3, Sept. 2017, pp. 292-6, doi:10.47203/IJCH.2017.v29i03.014.