A Northern Ireland doctor opposed to abortion said he collected the signatures of 911 health care professionals in the region who will refuse to perform abortions under a new measure that legalized the procedure.

Dr. Andrew Cupples, a general physician in Northern Ireland, collected the signatures for a letter he sent to the Northern Ireland Secretary last month. The letter, signed by doctors, nurses and midwives, stated their opposition to the new abortion laws and called for strong conscientious objection protections that would ensure that those opposed to abortion may opt out of performing or assisting with the procedure, The Independent reported.

“Hundreds of healthcare professionals in Northern Ireland will refuse to be involved in abortion services. There are even people who are planning to walk away from the healthcare service if they are forced to participate in abortion services,” Cupples told The Independent.

“There are also people in obstetrics and gynecology and midwives who are worried if they do not agree to be trained in abortion they could be forced to do so or reprimanded by their employers or a professional body,” he said.