The NMB in the 1920s and 1930s
Rutgers resigned from the NMB in 1920. The absence of medical support caused a period of serious decline in the movement for birth control in the Netherlands ending only when Dr. B. Premsela introduced the "Consultatiebureaux voor geslachtskunde" ("Centres for advice in sexual matters") in 1931. Before 1940 there were twelve such centres in the Netherlands, led by doctors, where advice on contraception was the main activity.
Until well into the 1930s, the opposition in principle against anticonception persisted even within the socialist movement. A contraception booklet by Joh. Ph. Tuyt met with hostile criticism by physician and social-democrat Louis Heijermans in 'Hygiënische Kroniek', Heijermans's column in the newspaper Het Volk and its Hague edition Vooruit. These articles were published with a comment by Jan Hoving, a freethinker and board member of the Nieuw-Malthusiaansche Bond.