*Intensive Care Unit, Royal Melbourne Hospital, Parkville, Victoria, Australia;

†Pharmacy Department, Royal Melbourne Hospital, Parkville, Victoria, Australia;

‡Department of Critical Care, Melbourne Medical School, Royal Melbourne Hospital, The University of Melbourne, Parkville, Victoria, Australia;

§University of Queensland Centre for Clinical Research, Faculty of Medicine, The University of Queensland, Brisbane, Queensland, Australia;

¶Departments of Pharmacy and Intensive Care Medicine, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia;

‖Division of Anaesthesiology, Critical Care, Emergency and Pain Medicine, Nîmes University Hospital, University of Montpellier, Nîmes, France;

**Department of Intensive Care, Austin Hospital, Melbourne, Victoria, Australia; and

††Australian and New Zealand Intensive Care Research Centre, Monash University, Melbourne, Victoria, Australia.

Correspondence: Lucy Sharrock, Pharmacy Department, Royal Melbourne Hospital, 300 Grattan St, Parkville, Victoria, Australia (e-mail: [email protected]).

Supported in part by a Royal Melbourne Hospital Home Lottery Grant in Aid.

The authors declare no conflict of interest.