1. Department of Gastroenterology and Hepatology, The Princess Alexandra Hospital, Brisbane, Australia;
2. Faculty of Medicine, The University of Queensland, Brisbane, Australia; and
3. Faculty of Health and Medical Sciences, The University of Adelaide, Adelaide, Australia
4. Faculty of Health and Medical Sciences, The University of Adelaide, Adelaide, Australia; and
5. Department of Gastroenterology and Hepatology, The Royal Adelaide Hospital, Adelaide, Australia
6. Department of Gastroenterology and Hepatology, The Princess Alexandra Hospital, Brisbane, Australia; and
7. Faculty of Medicine, The University of Queensland, Brisbane, Australia
8. Department of Gastroenterology and Hepatology, The Queen Elizabeth Hospital, Woodville South, Australia
9. Addiction and mental health services, Brisbane, Metro South health
10. Department of Gastroenterology and Hepatology, Logan Hospital, Logan, Australia
11. Faculty of Health and Medical Sciences, University of Adelaide, Brisbane, Australia; and
12. Discipline of Psychiatry, Central Adelaide Local Health Network