Authors: Julia Wade; Derek J Rosario; Joanne Howson; Kerry N L Avery; C Elizabeth Salter; M Louise Goodwin; Jane M Blazeby; J Athene Lane; Chris Metcalfe; David E Neal; Freddie C Hamdy; Jenny L Donovan Journal: BMC Health Serv Res Date: 2015-02-28 Impact factor: 2.655