@book{81755,
	author = {Merrill, Ray M. and Timmreck, Thomas C.},
	title = {Introduction to epidemiology /},
	publisher = {Jones and Bartlett Publishers,},
	year = {2006.},
	address = {Mississauga, Ontario. :},
	edition = {4th ed. },
	note = {Rev. ed. of: An introduction to epidemiology / Thomas C. Timmreck. 3rd ed. c2002.}
}