1.
Dutch Society of Nephrology, Dutch Society of Nephrology, Rotterdam, November 30, 1974
2.
Dutch Society of Nephrology, Utrecht, The Netherlands, April 4, 1981
3.
4.
5.
German-speaking Society of Nephrology and Dutch Society of Nephrology
Dutch Society of Nephrology Rotterdam, The Netherlands October 20, 1984
29th Scientific Meeting of the Dutch Society of Nephrology
33rd Scientific Meeting of the Dutch Society of Nephrology
34th Scientific Meeting of the Dutch Society of Nephrology
38th Scientific Meeting of the Dutch Society of Nephrology
36th Scientific Meeting of the Dutch Society of Nephrology
39th Scientific Meeting of the Dutch Society of Nephrology