Jansen H. In memoriam dr. H. Zwager (1926-1973). BMGN-LCHR [Internet]. 1975 Jan. 1 [cited 2024 May 5];90(1):83-5. Available from: https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-107748