Aregawi, Maru W ; Ali, Abdullah S ; Al-mafazy, Abdul-wahiyd... https://researchonline.lshtm.ac.uk/id/eprint/4651687/1/Reductions%20in%20malaria%20and%20anaemia%20case%20and%20death%20burden%20at%20hospitals%20following%20scale-up%20of%20malaria%20control%20in%20Zanzibar,%201999.pdf.
,
2011