Women commonly serve the church in the choir and at the organ, on parish councils, as volunteers for church events, fundraisers, and Sunday schools, as supporters through Women's Guilds, and as staff members in church offices. In the case of a married priest (Der Hayr), the wife of the priest generally plays an active role in the parish and is addressed by the title Yeretzgin. In limited circumstances, the Armenian Church allows for divorce and remarriage. Cases usually include either adultery or apostasy. On April 23, 2015, the Armenian Apostolic Church canonized all the victims of the Armenian Genocide; this service is believed to be the largest canonization service in history. 1.5 million is the most frequently published number of victims, however, estimates vary from 700,000 to 1,800,000. It was the first canonization by the Armenian Apostolic Church in four hundred years. The status of the Armenian Apostolic Church within Armenia is defined in the country's constitution. Article 8.1 of the Constitution of Armenia states: "The Republic of Armenia recognizes the exclusive historical mission of the Armenian Apostolic Holy Church as a national church, in the spiritual life, development of the national culture and preservation of the national identity of the people of Armenia." Among others, ethnographer Hranush Kharatyan has questioned the constitutionality of the phrase "national church". In 2009, further constitutional amendments were drafted that would make it a crime for non-traditional religious groups to proselytize on adherents of the Apostolic Church. Minority groups would also be banned from spreading 'distrust' in other faiths. These draft amendments were put on hold after strong criticism voiced by the Council of Europe and the Organization for Security and Cooperation in Europe. Armenian religious minorities and human rights groups also expressed serious concern over the amendments, with human rights activist Stepan Danielian stating "the Armenian Apostolic Church today wants to have a monopoly on religion". The Armenian Church defines religious groups operating outside its domain as "sects" and, in the words of spokesman Bishop Arshak Khachatrian, considers that "their activities in Armenia are nothing but a denial of the creed of the Armenian Apostolic Church, which is considered the national religion of the Armenian people". Hrant Bagratyan, former Prime Minister of Armenia, condemned the close association of the Armenian Apostolic Church with the Armenian government, calling the Church an "untouchable" organisation that is secretive of its income and expenditure. After the Bolshevik revolution and the subsequent annexation of Armenia by the U.S.S.R., all functioning religious institutions in NKAO were closed down and clergymen often either exiled or shot.