@book{1449,
	author = {Beaglehole, R. and Bonita, R.},
	title = {Basic epidemiology /},
	publisher = {World Health Organization,},
	year = {2006},
	address = {Geneva :},
	edition = {2nd ed.},
	url = {http://www.montefiore.ulg.ac.be/~kvansteen/GeneticEpi-PublicHealth/ac0910/Chapter3/BackgroundReading_CH3b_BonitaGEpiBook.pdf}
}