Received: 21 June 2018
Accepted: 19 November 2018
First Online: 20 December 2018
Ethics approval and consent to participate
: This study utilised patient data collected as standard routine protocol only, and as such ethics was not required. All patients contributing data to this study gave written informed consent for their data to be used for research purposes, including publication.
: The authors have no competing interests to disclose.
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