The leading association for mohelim who practice a risky oral blood suctioning technique in their circumcisions has vowed not to cooperate with New York City’s new health regulations governing use of the technique, known as metzitzah b’peh.

Brooklyn mohel Rabbi Avrohom Cohn, chairman of the American Board of Ritual Circumcision, said his group would not have parents sign waiver forms, which the city is now requiring as a condition for performing metzitzah b’peh.