Text and Data Mining valid from 2018-10-29
Received: 28 August 2018
Accepted: 20 October 2018
First Online: 29 October 2018
Compliance with ethical standards
: All authors declare that they have no conflict of interest.
: All procedures followed have been performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments.
: Informed consent was obtained from a patient for being included in the study.