Choudhry Aika H, Reynolds Stephen J, Mehaffy John, Douphrate David I, Gilmore Karen, Levin Jeffrey L, Nonnenmann Matthew W
Department of Occupational Health Sciences, University of Texas Health Science Center at Tyler, Tyler, Texas, USA.
J Occup Environ Hyg. 2012;9(7):D136-40. doi: 10.1080/15459624.2012.691410.