From DUTCH NEWS:
There was another group who ended up in the psychiatric wards: the boys who were sent there by a priest. Chances were that they would end up talking to psychiatrist Aimé Wijffels who specialised in castration, so much so that he became known nationally as ‘the castrator’. Wijffels himself claimed he did not castrate more than 35 men. Historian Marnix Koolhaas doubts very much whether this is true. "There must have more than 1,000," he insists.
In the fifties, doubts began to emerge about the voluntary nature of castration. Koolhaas spoke to Wijffels shortly before he died in 1991. He said the boys were sent to him by the priests they had confided in during confession. He would then speak to them about sterilisation, not castration. Wijffels thought his catholic faith justified his actions.