Walker, D; Wagstaff, D; McGuckin, D; Vindrola-Padros, C; Swart, N; Morris, S; Crowe, S; ... POMSHIP evaluation and implementation teams; + view all Walker, D; Wagstaff, D; McGuckin, D; Vindrola-Padros, C; Swart, N; Morris, S; Crowe, S; Fulop, NJ; Moonesinghe, SR; POMSHIP evaluation and implementation teams; - view fewer (2018) Mixed-methods evaluation of the Perioperative Medicine Service for High-Risk Patients Implementation Pilot (POMSHIP): a study protocol. BMJ Open , 8 (10) , Article e021647. 10.1136/bmjopen-2018-021647.