Novikova, Diana S. http://orcid.org/0000-0003-0840-1549
Udachkina, Helen V. http://orcid.org/0000-0002-3661-6427
Markelova, Eugenia I. http://orcid.org/0000-0002-1729-4610
Kirillova, Irina G. http://orcid.org/0000-0002-1003-2087
Misiyuk, Anna S. http://orcid.org/0000-0002-5272-4735
Demidova, Natalia V. http://orcid.org/0000-0003-3065-4235
Popkova, Tatiana V. http://orcid.org/0000-0001-5793-4689
Article History
Received: 20 February 2019
Accepted: 9 April 2019
First Online: 3 May 2019
Conflict of interest
: There are no potential conflicts of interest relevant to this article.
: The research involved human participants.
: All procedures performed in the study were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. The study protocol had been approved by the local ethics committee in V.A. Nasonova Research Institute of Rheumatology (protocol #4, 11th of December 2014).
: Informed consent was obtained from all individual participants included in the study.