@book{570,
	author = {Katz, David L. Elmore, Joann G. Wild, Dorothea M G. Lucan, Sean C. },
	title = {Jekel'S Epidemiology, Biostatistics and Preventive Medicine, and public health },
	publisher = {Elsevier},
	year = {2014},
	address = {Philadelphia },
	edition = {4th}
}