Text and Data Mining valid from 2019-12-01
Received: 21 August 2019
Accepted: 10 December 2019
First Online: 27 December 2019
Ethics approval and consent to participate
: Investigations were carried out in accordance with the Declaration of Helsinki of 1975 (revised in 2008). The study was approved by the Institutional Review Board and the Independent Ethics Committee of Vilnius University (Vilnius Regional Biomedical Research Ethics Committee, No. 158200–580-PPI-17, 11 June 2013).
: Written informed consent was obtained from the patients’ guardians after approval by the ethical committee.
: The authors declare no conflicts of interest.