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Authors
Nikolaidis, Pantelis Theodoros
Villiger, Elias
Rosemann, Thomas
Knechtle, Beat https://orcid.org/0000-0002-2412-9103
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Article History
Received: 8 December 2017
Accepted: 17 April 2018
First Online: 25 April 2018
Ethics approval and consent to participate
: The institutional review board of St Gallen, Switzerland, approved this study. Since the study involved analysis of publicly available data, the requirement for informed consent was waived.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
