@book{20121,
	author = {National Institute for Occupational Safety and Health.},
	title = {Worker health chartbook, 2004},
	publisher = {U.S. Dept. of Health and Human Services, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health,},
	year = {20004},
	series = {DHHS (NIOSH) publication},
	address = {Cincinnati, OH :}
}