1 Department of Intensive Care, Amsterdam University Medical Centers, Location University of Amsterdam, Amsterdam, The Netherlands. m.r.smit@amsterdamumc.nl.
2 Division of Pulmonary, Critical Care, and Sleep Medicine, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Northwell Health LIJ/NSUH Medical Center, Hempstead, NY, USA.
3 Anaesthesia and Intensive Care, San Matteo Hospital, Pavia, Italy.