Ponkratova, D. A.
Lushnikova, A. A.
Article History
Received: 12 February 2019
Revised: 5 March 2019
Accepted: 7 March 2019
First Online: 19 August 2019
COMPLIANCE WITH ETHICAL STANDARDS
: <i>Conflict of interest</i>. The authors declare that they have no conflict of interest.
: <i>Statement of compliance with standards of research involving humans as subjects.</i> The study design was approved by the Ethics Committee of the Blokhin Center. All patients gave their written informed consent to the use of their tissue specimens in the research project.