1. Fetal i+D Fetal Medicine Research Center, IDIBAPS, Barcelona Center for Maternal Fetal and Neonatal Medicine (BCNatal), Hospital Clínic and Hospital Sant Joan de Déu, Universitat de Barcelona, Barcelona, Spain
2. Intensive Care in Obstetric Research Group (GRICIO), Department of Obstetrics and Gynecology, University of Cartagena, Cartagena, Colombia
3. Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Medicine, Warren Alpert Medical School of Brown University, Providence, Rhode Island