HARTFORD, Conn. (AP) — Graduate dental school students and a top University of Connecticut orthodontics professor took a selfie with two severed heads used for medical research at a training workshop at Yale University last year — an episode Yale officials called "disturbing" and "inexcusable." The selfie was taken in June at the Yale School of Medicine during the 2017 DePuy Synthes Future Leaders Workshop, which focused on dental-related facial deformities.The Associated Press obtained a copy of the photo from a person who received it through a private group chat. That person, who demanded anonymity because of potential harm to...