Kumud K Dhital, FRCS-CTh, Arjun Iyer, MBBS, Mark Connellan, FC Cardio (SA), Hong C Chew, MS, Ling Gao, PhD, Aoife Doyle, MEngSc, Mark Hicks, PhD, Gayathri Kumarasinghe, FRACP, Claude Soto, MSc, Andrew Dinale, BAppSc, Bruce Cartwright, MBBS, Priya Nair, FCICM, Emily Granger, MBBS, Paul Jansz, PhD, Andrew Jabbour, PhD, Eugene Kotlyar, MD, Prof Anne Keogh, MBBS, Prof Christopher Hayward, MD, Prof Robert Graham, MD, Phillip Spratt, FRACS, Prof Peter Macdonald, MD. The Lancet (2015). DOI:https://doi.org/10.1016/S0140-6736(15)60038-1.