Text and Data Mining valid from 2018-10-29
Received: 8 August 2018
Revised: 25 September 2018
Accepted: 26 September 2018
First Online: 29 October 2018
Compliance with ethical standards
: This manuscript has been prepared in compliance with ethical standards.
: The authors declare that they have no conflict of interest.
: Informed consent was obtained from the patient.