Dr. Mary Scollay has retired from her full-time duties as the Horseracing Integrity and Welfare Unit's chief of science, effective immediately, HIWU announced Tuesday. While Scollay will continue to serve as a consultant to HIWU, Dr. Michael Hardy has assumed the position of acting chief of science. "Dr. Scollay was integral to the creation of HIWU and the launch and enforcement of the Horseracing Integrity and Safety Authority's Anti-Doping and Medication Control Program," said Ben Mosier, executive director of HIWU. "In the three-plus years since our first introduction at Turfway...