Senior physician Pediatrics Surgical Clinic, Erlangen, Germany, 1978—1980, junior professor Germany, 1980—1984, chair for pediatrics surgery Muenster, Germany, since 1984. Chief of pediatric surgical research center (foundation) Pediatrics Surgical Research Center Foundation, Muenster, Germany, 1993. Chief European Databanc for Extraordinary Courses and Complications, 1994.
Medical representative International Partnership between Muen ster and Monastir. Member of German ALssn. Laser Medicine (president 1994), Greek Association Pediatrics Surgery (honorary), Chile Association Pediatrics Surgery (honorary), Spanish Association Pediatrics Surgery (honorary), Golf Club, Claypigeon Shooting Club.
Married Karin Großmann, October 20, 1966. Children: Claudia Willital-Kraneis, Marion.