@article {collier2012direct,
	title = {Direct healthcare costs of selected diseases primarily or partially transmitted by water},
	journal = {Epidemiology \& Infection},
	volume = {140},
	number = {11},
	year = {2012},
	pages = {2003{\textendash}2013},
	publisher = {Cambridge University Press},
	author = {Collier, SA and Stockman, LJ and Hicks, LA and Garrison, LE and Zhou, FJ and Beach, MJ}
}
