Goel A, Mittal S, Taneja BK, Singal N, Attri S. Simultaneous administration of mifepristone and misoprostol for early termination of pregnancy: a randomized controlled trial. Archives of Gynecology and Obstetrics. 2011 Mar 23;283(6):1409. doi: 10.1007/s00404-011-1881-2.