RAJI, I. A.; OCHE, O. M.; KAOJE, A. U.; MOHAMMED, Y.; ISAH, B. A.; RAJI, M. O.; AWOSAN, K. J.; ABUBAKAR, A. U.; MOHMMED, A. WHO Five Keys to Safer Food Handling: Knowledge and Practice among Food Handlers in Sokoto Metropolis, Sokoto, Nigeria. International Journal of TROPICAL DISEASE & Health, v. 42, n. 7, p. 32-42, 25 maio 2021.