Funding for this research was provided by:
Russian Foundation for Basic Research (19-015-00055a)
Received: 27 March 2019
Accepted: 5 June 2019
First Online: 13 June 2019
Ethics approval and consent to participate
: The study was approved by the Ethics committee of Research Institute of Internal and Preventive Medicine-Branch of the Institute of Cytology and Genetics and by the Ethics committee of The Federal State Budgetary Institution "National Medical Research Center named after academician E.N. Meshalkin "of the Ministry of Health of the Russian Federation. The data and samples were collected after written informed consent obtained from all study participants.
: Not applicable.
: The authors declare that they have no competing interests.