Text and Data Mining valid from 2020-04-21
Received: 11 September 2019
Accepted: 12 April 2020
First Online: 21 April 2020
Ethics approval and consent to participate
: Written informed consents to provide a stool sample and to the availability of the stored samples for additional bioassays were obtained from all the study participants before enrollment. The study was carried out in accordance with the Declaration of Helsinki and approved by Ethics Committee of the Kyiv Institute of Gerontology (approval number: 88/16; date of approval: 28/12/2016).
: Not applicable.
: The authors declare no competing interests.