Funding for this research was provided by:
sps1 (19-01-00666)
sps2 (18-07-01432)
Article History
First Online: 19 August 2020
Compliance with ethical standards
:
: Oleg Khamisov, Mikhail Posypkin and Alexander Usov declare that they have no conflict of interest.
: This article does not contain any studies with human participants or animals performed by any of the authors.