

@article {12918,
	title = {Effects of improved water supply and sanitation on ascariasis, diarrhoea, dracunculiasis, hookworm infection, schistosomiasis, and trachoma.},
	journal = {Bulletin of the World Health Organization},
	volume = {69},
	number = {5},
	year = {1991},
	pages = {609},
	author = {Esrey, Steven A and Potash, James B and Roberts, Leslie and Shiff, Clive}
}
