From the chief editor

Conflicts of Interest Disclosure:

The authors declares that there is no conflict of interest.

Article info:

Date submitted: 21.07.2019

Published: 21.07.2019

The author has read and approved the final manuscript.

Peer review info:

"Kachestvennaya Klinicheskaya Praktika = Good Clinical Practice" thanks the anonymous reviewer(s) for their contribution to the peer review of this work.

Editorial comment:

In case of any discrepancies in a text or the differences in its layout between the pdf-version of an article and its html-version the priority is given to the pdf-version.