Maternal serum interleukin-6, c-reactive protein, and matrix metalloproteinase-9 concentrations as risk factors for preterm birth <32 weeks and adverse neonatal outcomes

Yoram Sorokin, Roberto Romero, Lisa Mele, Ronald J. Wapner, Jay D. Iams, Donald J. Dudley, Catherine Y. Spong, Alan M. Peaceman, Kenneth J. Leveno, Margaret Harper, Steve N. Caritis, Menachem Miodovnik, Brian M. Mercer, John M. Thorp, Mary Jo O'Sullivan, Susan M. Ramin, Marshall W. Carpenter, Dwight J. Rouse, Baha Sibai