@book{37453,
	author = {Checkoway, Harvey. and Pearce, Neil.},
	title = {Research methods in occupational epidemiology},
	publisher = {Oxford University Press,},
	year = {2004.},
	series = {Monographs in epidemiology and biostatistics ;},
	address = {New York ;},
	edition = {2nd ed. /},
	url = {http://dx.doi.org/10.1093/acprof:oso/9780195092424.001.0001}
}