Text and Data Mining valid from 2019-09-01
Received: 5 December 2018
Revised: 13 March 2019
Accepted: 15 May 2019
First Online: 1 November 2019
COMPLIANCE WITH ETHICAL STANDARDS
: <i>Conflict of interest</i>. The authors declare no explicit and potential conflicts of interest associated with the publication of this article.
: <i>Statement of compliance with standards of research involving humans as subjects</i>. All studies were conducted in accordance with the principles of biomedical ethics, which were set out in the Declaration of Helsinki in 1964 and its subsequent updates, and approved by the Ethics Committee of the Bechtereva Institute of the Human Brain, Russian Academy of Sciences (St. Petersburg). Each study participant provided a voluntary written informed consent signed after explanation of potential risks and benefits as well as the nature of the forthcoming research.