Anglicans who favor Ritualism, claim to celebrate Mass, reserve the sacrament, use the Latin Missal, and in many ways imitate Catholics, as by having confessionals and stations of the cross in their churches. Some of them reject the branch-theory, that the Anglican Church is a branch of the Catholic Church, and believe in the primacy of the pope, holding that their Church was only accidentally severed from the Catholic. Others still insist on the branch-theory. It is estimated that over 4000 ministers are enrolled in the Anglo-Catholic movement and several religious communities of men and women. In over 1000 Anglican churches confessions are heard. Anglo-Catholics aim at union with the Greek and Russian Churches.