Authors: Fay Crawford; Francesca M Chappell; James Lewsey; Richard Riley; Neil Hawkins; Donald Nicolson; Robert Heggie; Marie Smith; Margaret Horne; Aparna Amanna; Angela Martin; Saket Gupta; Karen Gray; David Weller; Julie Brittenden; Graham Leese Journal: Health Technol Assess Date: 2020-11 Impact factor: 4.014