Nkporbu, K. A., I. Otti, and L. Ugbomah. “Pattern and Socio-Demographic Correlates of Substance Use Among Patients Attending the Drug Unit of the University of Port Harcourt Teaching Hospital: https://doi.Org/10.60787/NMJ-64-1-241”. Nigerian Medical Journal, vol. 64, no. 1, May 2023, p. 137, doi:10.60787/nmj.v64i1.241.