ORIGINAL RESEARCH
Long-term immunity alterations in the employees of the high hydrogen sulfide content gas condensate processing facility
Astrakhan State Medical University, Astrakhan, Russia
Correspondence should be addressed: Oksana V. Boiko
Bakinskaya, 121, 414000, Astrakhan, Russia; ur.liam@80okyobo
Author contribution: Boiko OV — study concept and design, data acquisition and processing; Dotsenko YuI — data acquisition and processing; all the authors — approval of the final version of the article, responsibility for integrity of all article sections.
Compliance with ethical standards: the study was approved by the Ethics Commitee of the municipal outpatient clinic № 8 (protocol № 15 dated November 21, 2020); the informed consent was submitted by all study participants.