Angiogenic ProteinsCysteine-Rich Protein 61Angiogenesis Inducing AgentsVascular Endothelial Growth Factor ANeovascularization, PhysiologicNeovascularization, PathologicVascular Endothelial Growth Factor Receptor-1Vascular Endothelial Growth FactorsEndothelial Growth FactorsEndothelial CellsDelayed DiagnosisLymphokinesPrenatal DiagnosisEarly DiagnosisFibroblast Growth Factor 2Angiogenesis InhibitorsSensitivity and SpecificityEndothelium, VascularVascular Endothelial Growth Factor Receptor-2Angiopoietin-1DiagnosisAngiopoietin-2Pregnancy Proteins