1 Department of Anesthesia & Perioperative Care, University of California, San Francisco, San Francisco, CA, USA. [email protected].
2 University of Otago, Christchurch Hospital, Christchurch, New Zealand.
3 Services Organization and Clinical Interventions Unit (SCI), Service Delivery and Safety Department (SDS), Health Systems and Innovation (HIS), World Health Organization, Geneva, Switzerland.
4 Department of Anaesthesiology, University of Auckland, Auckland, New Zealand.
5 Department of Anaesthesia, Auckland City Hospital, Auckland, New Zealand.