Authors: Ian A Harris; Justine M Naylor; Andrew Lawson; Rachelle Buchbinder; Rebecca Ivers; Zsolt Balogh; Paul Smith; Rajat Mittal; Wei Xuan; Kirsten Howard; Arezoo Vafa; Piers Yates; Bertram Rieger; Geoff Smith; Ilia Elkinson; Woosung Kim; Mellick Chehade; Jai Sungaran; Kim Latendresse; James Wong; Sameer Viswanathan; Martin Richardson; Kush Shrestha; Herwig Drobetz; Phong Tran; Jeremy Loveridge; Richard Page; Raphael Hau; Roger Bingham; Jonathan Mulford; Ian Incoll Journal: BMJ Open Date: 2017-06-23 Impact factor: 2.692