Keane, S.
Clarke, M.
Murphy, M.
McGrath, D.
Smith, D.
Farrelly, N.
MacHale, S.
Article History
Received: 1 December 2017
Accepted: 5 April 2018
First Online: 2 May 2018
Ethics approval and consent to participate
: Written informed consent was given by all participants. The study was approved by the Ethics Committees of Beaumont Hospital and of Trinity College, Dublin.
: The authors declare that they have no competing interests.
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