Can differences in obstetric outcomes be explained by differences in the care provided? the MFMU Network APEX study

William A. Grobman^*, Jennifer L. Bailit, Madeline Murguia Rice, Ronald J. Wapner, Michael W. Varner, John M. Thorp, Kenneth J. Leveno, Steve N. Caritis, Jay D. Iams, Alan T. Tita, George Saade, Yoram Sorokin, Dwight J. Rouse, Jorge E. Tolosa, J. Peter Van Dorsten