A longitudinal study of angiogenic (placental growth factor) and anti-angiogenic (soluble endoglin and soluble vascular endothelial growth factor receptor-1) factors in normal pregnancy and patients destined to develop preeclampsia and deliver a small for gestational age neonate - Romero,R.; Nien,J.K.; Espinoza,J. (J Matern Fetal Neonatal Med, 2008)