Text and Data Mining valid from 2019-04-20
Received: 27 November 2018
Accepted: 10 April 2019
First Online: 20 April 2019
Compliance with ethical standards
: The authors declare that they have no conflicts of interest in this work.
: The present study was approved by the ethics committee of the University and adhered to the tenets of the Declaration of Helsinki.
: Additionally, the written informed consents were signed by all participants.