@book{9267,
	author = {Colombia. Instituto Nacional de Salud.},
	title = {Principios de epidemiología :},
	publisher = {Instituto Nacional de Salud,},
	year = {c2004.},
	address = {Bogotá :},
	edition = {2a. ed.},
	note = {Curso de autoaprendizaje 3030-G.}
}