Authors: Erica P Gunderson; Cora E Lewis; Gina S Wei; Rachel A Whitmer; Charles P Quesenberry; Steve Sidney Journal: Obstet Gynecol Date: 2007-03 Impact factor: 7.661
Authors: Kavitha T Ram; Paul Bobby; Susan M Hailpern; Joan C Lo; Miriam Schocken; Joan Skurnick; Nanette Santoro Journal: Am J Obstet Gynecol Date: 2008-01-14 Impact factor: 8.661