Sheiman, Igor http://orcid.org/0000-0002-5238-4187
Shishkin, Sergey http://orcid.org/0000-0002-0807-3277
Sazhina, Svetlana http://orcid.org/0000-0002-2023-3384
Article History
Received: 17 December 2021
Accepted: 1 April 2022
First Online: 15 April 2022
Declarations
:
: National Research University High School of Economics has a “Commission on the intra university surveys and ethical reviews of empirical research projects” ExternalRef removed. Projects under the Basic research program do not require an ethics approval statement from this commission. The authors are ready to participate.
: Igor Sheiman, Sergey Shishkin, Svetlana Sazhina agree to publish this paper.
: The authors declare that they have no competing interests.