The Metabolomic Signature of the Placenta in Spontaneous Preterm Birth oleh Summer Elshenawy, Sara E. Pinney, Tami Stuart, Paschalis-Thomas Doulias, Gabriella Zura, Samuel Parry, Michal A. Elovitz, Michael J. Bennett, Amita Bansal, Jerome F. Strauss, Harry Ischiropoulos, Rebecca A. Simmons