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Article History

Received: 7 July 2018

Accepted: 5 November 2018

First Online: 3 December 2018

Ethics approval and consent to participate

: The study was approved by the ethics committee of the LAIKO Hospital. All participants signed informed consent forms.

: Not applicable.

: The authors declare that they have no competing interests.

: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.