Njideka Dorathy Eneogu, Jovita Chinelo Ejimonye, Sylvester N Ogbueghu, Robert Azu Nnachi, Michael Eskay, and Chinyere Augusta Nwajiuba, “Cost estimation of a school-based intervention for improving Hiv/Aids risk perception among secondary school adolescents in Enugu State, Nigeria”, J Pak Med Assoc, vol. 71, no. 8, pp. 1–15, Apr. 2021.