A University of Wisconsin-Madison researcher suspended for unauthorized experiments was a member of the schoolâ??s biosafety committee, where he helped approve studies involving hazardous materials. Professor Gary Splitter played a key role in reviewing safety precautions for research involving the deadly 1918 flu strain, chronic wasting disease, tuberculosis and other viruses, according to minutes from committee meetings. Splitter served on the committee between August 2003 and February 2006. Federal regulators contend his lab started violating biosafety rules during that time.