1 National Institute for Health Research, Biomedical Research Centre at University Hospitals Birmingham NHS Foundation Trust and the University of Birmingham, Birmingham, UK.
2 Centre for Liver & Gastrointestinal Research, Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, UK.
3 University of Chicago, Pritzker School of Medicine, Chicago, Illinois, USA.
4 City University of New York Graduate School of Public Health and Health Policy (CUNY SPH), New York, New York, USA.
5 Barcelona Institute for Global Health (ISGlobal), Hospital Clinic, University of Barcelona, Barcelona, Spain.
6 University of Southern California Keck School of Medicine Los Angeles, California, USA.