Authors: Aruchuna Ruban; Christina Gabriele Prechtl; Michael Alan Glaysher; Navpreet Chhina; Werd Al-Najim; Alexander Dimitri Miras; Claire Smith; Anthony P Goldstone; Mayank Patel; Michael Moore; Hutan Ashrafian; James P Byrne; Julian P Teare Journal: BMJ Open Date: 2019-11-14 Impact factor: 2.692