SALT LAKE CITY (AP) - The University of Utah is investigating a complaint that a convicted felon working at a fertility clinic replaced a customer's sperm with his own, fathering a girl 21 years ago. The mother of the girl, Pamela Branum, says she and her husband discovered a genetic mismatch in their daughter, and were able to trace her lineage with help from relatives of the now-deceased fertility clinic worker, Thomas Ray Lippert. "I don't think we're the only ones," Branum told CBS affiliate KUTV in Salt Lake City. "We think we're one of many" victims who used a...