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Article History

Received: 13 January 2019

Accepted: 11 March 2019

First Online: 4 April 2019

Ethics approval and consent to participate

: The participants signed an informed consent before the start of the study. The study was conducted in accordance with the Declaration of Helsinki and was approved by the ethics committee of the University.

: Not applicable.

: The authors declare that they have no competing interests.

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