*Anaesthesia Dept, Royal Hallamshire Hospital, Sheffield, UK
†International Academy of Paediatric Endoscopy Training, Sheffield Children's Hospital NHS Foundation Trust Sheffield, UK.
Address correspondence and reprint requests to D. Turnbull, BM, FRCA, PhD, Anaesthetic Department, Royal Hallamshire Hospital, Sheffield UK S10 2JF (e-mail: David.email@example.com).
Received 24 May, 2019
Accepted 26 May, 2019
The authors report no conflicts of interest.