Onah PO, Abdulateef S. Catastrophic out of pocket medicine expenditure: A case for monitoring performance of primary providers on national health insurance scheme: https://doi.org/10.51412/psnnjp.2023.33. PSNNJP [Internet]. 2023 Oct. 8 [cited 2024 Oct. 31];57(2):730-4. Available from: https://psnnjp.org/index.php/home/article/view/497