Does information available at admission for delivery improve prediction of vaginal birth after cesarean?

William A. Grobman, Yinglei Lai, Mark B. Landon, Catherine Y. Spong, Kenneth J. Leveno, Dwight J. Rouse, Michael W. Varner, Atef H. Moawad, Hyagriv N. Simhan, Margaret Harper, Ronald J. Wapner, Yoram Sorokin, Menachem Miodovnik, Marshall Carpenter, Mary J. OSullivan, Baha M. Sibai, Oded Langer, John M. Thorp, Susan M. Ramin, Brian M. Mercer