Text and Data Mining valid from 2019-02-01
Received: 7 December 2018
Revised: 9 January 2019
Accepted: 15 January 2019
First Online: 1 February 2019
Compliance with ethical standards
: The authors declare that they have no conflict of interest.
: All volunteers signed a written consent to participate in the study and were introduced with the rights to abandon it at any time without further justifications. The blood sampling was done as a part of the study approved by the Institutional and Hospital Ethics committees and observed the ethical principles of the Declaration of Helsinki.