VATICAN CITY: Three nuns lashed out on Friday against the menial work they have to do for clergymen, often for no money, in a rare public criticism of the Catholic Church?s male hierarchy. ?Some sisters employed by clergymen get up at dawn to prepare breakfast and only go to bed once dinner has been served, the house cleaned and the laundry washed and ironed,? said Sister Marie, who came to Rome from Africa 20 years ago. Voicing criticism is no simple task for nuns from developing countries, who may have had school fees or medical care for their relatives paid by their religious congregations. ?The sisters feel obliged, bound and so they keep quiet,? Marie told the monthly magazine ?Women, Church, World? published with the official Vatican daily L?Osservatore Romano.