1 Department of Intensive Care, Christchurch Hospital, Te Whatu Ora - Health New Zealand, New Zealand; Department of Medicine, University of Otago, Christchurch, New Zealand.
2 Department of Immunology and Rheumatology, Christchurch Hospital, Te Whatu Ora - Health New Zealand, New Zealand.
3 Department of Medicine, University of Otago, Christchurch, New Zealand; Department of Infectious Diseases, Christchurch Hospital, Te Whatu Ora - Health New Zealand, New Zealand.