Text and Data Mining valid from 2018-11-16
Received: 1 July 2018
Revised: 25 September 2018
Accepted: 9 October 2018
First Online: 16 November 2018
Compliance with ethical standards
: The pertinent ethical committee has given its approval and/or the reported investigations have been performed in accordance with the principles of the Declaration of Helsinki.
: Informed consent had been obtained from the patients, whenever appropriate.