By the end of 2002, the Society of Zurich Physicians ("Zürcher Ärztegesellschaft") sought to prevent Baumann from continuing with his work, but having reached the end of his career, he left the society.
By December 2002, the Society of Zurich Physicians ("Zürcher Ärztegesellschaft") tried to prevent Baumann from continuing his work, but due to his retirement, he left the society.