Text and Data Mining valid from 2018-02-13
Received: 16 October 2017
Accepted: 7 February 2018
First Online: 13 February 2018
Compliance with ethical standards
: The authors declare no conflict of interest.
: Lithuanian State Data Protection Inspectorate for Working with Personal Patient Data [No. 2R-648 (2.6-1)].
: Informed consent was obtained from all individual participants included in the study.