<prompt> Chassar Moir surgery is done is a case ofUterine inversionVesicovaginal fistula repairUreterovesical fistula repairRetroverted uterus  <response>: Chassar moir technique is widely used in the repair of vesicovaginal fistula.Vagina and bladder are separated all around by flap splitting method and sutured separately in two layers. 