Kimberly Anne Sing,^* Daniel Hryhorczuk,^** Giovanni Saffirio,^*** Thomas Sinks,^**** Daniel C. Paschal,^***** John Sorensen,^****** Edwin H. Chen<sup>*******


*</sup>Kimberly Anne Sing, MD, FACEM., obtained a medical doctorate from the University of California at Los Angeles, completed her training in emergency medicine at the University of Illinois, Chicago, and then finished a fellowship in toxicology at the Toxikon Consortium in Chicago. She was an assistant professor at the University of Wisconsin, Oregon Health Sciences University and the Medical College of Wisconsin. Her address: 6872 Ancestral Hills, Las Vegas, Nevada 89110, USA. hoff_sing@cox.net
^**Daniel Hryhorczuk, MD, M.P.H., FACMT, is a professor of environmental and occupational health sciences and epidemiology at the University of Illinois School of Public Health. He is the Director of the Great Lakes Centers for Occupational and Environmental Safety in Health which is a World Health Organization Collaborating Centre for Occupational Safety and Health. He is also the Director of Chicago’s Toxikon Consortium. His address: School of Public Health (M/C 922), 2121 W. Taylor Street Chicago, Illinois 60612, USA. dhryhorc@uic.edu
^***Giovanni Saffirio, PhD, worked as missionary and anthropologist among the Yanomama Indians of the Catrimani River, State of Roraima, Brazil, from October 1968 to July 1996. From October 1977 to May 1985, he studied at the University of Pittsburgh, PA, where he received a PhD degree in cultural anthropology. His address: 27457 E. Baseline, Highland, California 92346, USA.
^****Thomas Sinks, PhD, is an epidemiologist at the United States Centers for Disease Control and Prevention. He received his doctorate in preventive medicine at Ohio State University. His address: 4770 Buford Highway, NE (F29) Atlanta, Georgia 30341-3724, USA.
^*****Daniel C. Paschal, PhD, is a research chemist at the US Centers for Disase Control and prevention in Atlanta, GA. His research interests include development and validation of modern spectroscopic methods for analysis of environmentally important toxic metals. His address: 4770 Buford Highway, NE (F29) Atlanta, Georgia 30341-3724, USA.
^******John Sorensen, PhD, is a research fellow with the Archaeometry Laboratory at the University of Minnesota Duluth. From 1980 – 1986 he was involved with research on acid rain and its effects on lakes in the Upper Mid-West. Since 1987 he has been studying a variety of research topics regarding mercury contamination in precipitation, lake water and sediments, and biota with special emphasis on fish. His address: 214 RLB, 10 University Drive Duluth, MN 55812, USA.
^*******Edwin H. Chen, PhD, is professor of biostatistics, University of Illinois at Chicago, School of Public Health. His research interests are in clinical trials and statistical computing. His major collaborative research areas include birth weight, obesity, and cancer screening and prevention. His address: School of Public Health (M/C 923), 2035 W. Taylor Street, Chicago, Illinois 60612-7259, USA.