Dr. Jon Hallberg explains the effects of arsenic

Dr. Jon Hallberg
Dr. Jon Hallberg, Assistant Professor, Department of Family Medicine and Community Health Medical Director at the University of Minnesota. He is a regular medical analyst on MPR's All Things Considered.
Photo courtesy of Dr. Jon Hallberg

Dr. Jon Hallberg is a physician in family medicine at the University of Minnesota. He spoke to All Things Considered host Tom Crann about the effects of arsenic and its dangers.

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