title: In memoriam: Johan Groeneveld.
authors.affiliation: Department of Intensive Care 7D16, VU University Medical Center, P.O. Box 7057, 1007 MB, Amsterdam, The Netherlands. a.girbes@planet.nl.
authors.forename: Armand
authors.identifier: http://orcid.org/0000-0002-0711-0494
authors.initials: A
authors.lastname: Girbes
authors.affiliation: Department of Intensive Care Medicine, University Medical Center, University of Utrecht, Utrecht, The Netherlands.
authors.forename: Jozef
authors.initials: J
authors.lastname: Kesecioglu