1 Division of Neonatology and Pediatric Intensive Care, Children's University Hospital of Geneva and University of Geneva, Geneva, Switzerland. olivier.baud@hcuge.ch.
2 Inserm U1141, University Paris-Cité, Paris, France. olivier.baud@hcuge.ch.
3 Department of Neonatal Medicine of Port-Royal, Cochin Hospital, FHU PREMA, AP-HP Centre-Université Paris Cité, Paris, France.
4 Institut Cochin, U1016 INSERM, CNRS UMR8104, Faculté de Paris, 24 Rue du Faubourg St Jacques, Paris, 75014, France.