title: The authors reply.
authors.affiliation: Intensive Care, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands; Department of Medical Informatics, Academic Medical Centre, Amsterdam, The Netherlands, and National Intensive Care Evaluation, Amsterdam, The Netherlands.
authors.forename: Peter
authors.initials: P
authors.lastname: Pickkers
authors.forename: Niels
authors.initials: N
authors.lastname: Peek
authors.forename: Nicolet
authors.initials: N
authors.lastname: de Keizer
mesh_terms: D015992:Body Mass Index; D016638:Critical Illness / Q000401:mortality*; D005260:Female; D017052:Hospital Mortality; D006801:Humans; D007362:Intensive Care Units; D008297:Male