In memoriam Dr. J.J. Westendorp boerma 1901-1970. BMGN-LCHR [Internet]. 1971 Jan. 1 [cited 2024 Sep. 19];86(1):157-. Available from: https://ojstest.minions.amsterdam/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-107774