1 Materno-fetal and Obstetrics Research Unit, Department Woman-Mother-Child, Lausanne University Hospital and University of Lausanne, School of Health Sciences (HESAV), HES-SO University of Applied Sciences and Arts Western Switzerland, Avenue de Beaumont 21, 1011 Lausanne, Switzerland. Electronic address: leo.pomar@hesav.ch.
2 Materno-fetal and Obstetrics Research Unit, Department Woman-Mother-Child, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland.