Davies, Patrick
Yasin, Samra
Gates, Simon
Bird, David
Silvestre, Catarina
Article History
Received: 25 October 2018
Accepted: 20 December 2018
First Online: 29 March 2019
Competing Interests
: Draeger AG paid for the article processing fee. They were only contacted after final completion of the paper. Draeger had no input in to the study design or patient selection, and did not edit any drafts or proofs of the paper. There are no other competing interests.