As his 22-year marriage was falling apart, Dr. Mark Schleiss was desperate for information about his estranged family. Court records show that his wife, Collett, wouldn't return his phone calls. His oldest daughter refused to see him before she moved to Oregon for college. He couldn't even find out why his teenage son was seeing a physical therapist. Locked out of his home and ignored by his loved ones, Schleiss, a prominent University of Minnesota researcher, took matters into his own hands. He used his position at the university to peek into the medical records of his wife and two teenage daughters a dozen times in 2008 and 2009, university and other records show.The state Board of Medical Practice investigated but did not discipline Schleiss, who heads the university's pediatric infectious diseases division.