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APA Citation
Mpyet, C., Muhammad, N., Adamu, M. D., Muazu, H., Umar, M. M., Goyol, M., Onyebuchi, U., Chima, I., Idris, H., William, A., Isiyaku, S., Nwobi, B., Flueckiger, R. M., Willis, R., Pavluck, A., Chu, B. K., Olobio, N., & Solomon, A. W. (n.d.). prevalence of Trachoma in Katsina State, Nigeria: Results of 34 District-Level Surveys. Ophthalmic epidemiology, 23, 55–62. http://access.bl.uk/ark:/81055/vdc_100039858099.0x00000a