1
by Taylor, Jessilynn, Roney, Nickolette, Harper, Carolyn, Fransen, Margaret E.
Published 2006
U.S. Department of Health and Human Services, Public Health Service, Agency for Toxic Substances and Disease Registry

2
by Wilson, Jewell D., Fransen, Margaret E., Llados, Fernando, Singh, Mona
Published 2000
U.S. Department of Health and Human Services, Public Health Service, Agency for Toxic Substances and Disease Registry