Sjef Janssen (born January 15, 1950) is the Dutch national Olympic team dressage coach and spouse of Anky van Grunsven.Isabell Werth, Anky van Grunsven & Steffen Peters to Compete at Palm Beach Exquis World Dressage Masters, Dressage News, accessed August 25, 2010 He won a bronze medal in team dressage at the 1991 European Dressage Championships in Donaueschingen, Germany.
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