1 School of Health Sciences, University of Canterbury-Te Whare Wānanga o Waitaha, Christchurch 8041, New Zealand. Electronic address: matt.hobbs@canterbury.ac.nz.
2 School of Health Sciences, University of Canterbury-Te Whare Wānanga o Waitaha, Christchurch 8041, New Zealand.
3 School of Health Sciences, University of Canterbury-Te Whare Wānanga o Waitaha, Christchurch 8041, New Zealand; School of Clinical Medicine, Primary Care Clinical Unit, The University of Queensland, Brisbane, Australia.