1 Centre for Medical and Health Sciences Education, School of Medicine, University of Auckland, Auckland, New Zealand.
2 Department of Psychological Medicine, School of Medicine, University of Auckland, Auckland, New Zealand.
3 Centre for Medical and Health Sciences Education, School of Medicine, University of Auckland, Auckland, New Zealand; Department of Anaesthesia, Auckland City Hospital, Auckland, New Zealand. Electronic address: j.weller@auckland.ac.nz.