1 Centre for Health Services Research, Faculty of Medicine, The University of Queensland, Brisbane, Australia.
2 Frazer Institute, Dermatology Research Centre, The University of Queensland, Brisbane, Australia.
3 Frazer Institute, Dermatology Research Centre, The University of Queensland, Brisbane, Australia; Dermatology Department, Princess Alexandra Hospital, Brisbane, Australia.
4 Centre for Health Services Research, Faculty of Medicine, The University of Queensland, Brisbane, Australia. Electronic address: m.janda@uq.edu.au.