Soluble fms-like tyrosine kinase-1 to placental growth factor ratio : ruling out pre-eclampsia for up to 4 weeks and value of retesting - Zeisler, H. (Department of Obstetrics and Gynecology. Medical University Vienna) ; Llurba, Elisa (Hospital Universitari Vall d'Hebron) ; Chantraine, F. J. (University of Liège. CHR de la Citadelle) ; Vatish, M. (University of Oxford) ; Staff, A. C. (Oslo University Hospital (Oslo, Noruega)) ; Sennström, M. (Karolinska University Hospital and Karolinska Institutet (Suècia)) ; Olovsson, M. (Uppsala University) ; Brennecke, S. P. (University of Melbourne) ; Stepan, H. (Leipzig University) ; Allegranza, D. (Roche Diagnostics International Ltd) ; Schoedl, M. (Roche Diagnostics GmbH) ; Grill, S. (Roche Diagnostics GmbH) ; Hund, M. (Roche Diagnostics International Ltd) ; Verlohren, S. (Charité - Universitätsmedizin Berlin) ; Universitat Autònoma de Barcelona