 The only physical evidence of abuse in the case was presented by Michael Mouw, an emergency room physician at Brackenridge Hospital who examined the 3-year-old girl in 1991 on the night she first accused Dan Keller of abuse.Mouw testified at the Kellers' trial that he found two tears in the girl's hymen consistent with sexual abuse and determined that the injuries were less than 24 hours old.Three years after the trial, while attending a medical seminar, Mouw said a slide presentation on "normal" pediatric hymens included a photo that was identical to what he had observed in the girl.