1. Laboratory for the Research of the Mechanisms of Human Microbiocenoses Formation, Institute for Cellular and Intracellular Symbiosis Ural Branch of Russian Academy of Sciences Orenburg Russia
2. Department of Childhood Diseases Orenburg State Medical University Orenburg Russia
3. Department of Therapeutic Dentistry Orenburg State Medical University Orenburg Russia
4. Center of Shared Scientific Equipment, Institute for Cellular and Intracellular Symbiosis Ural Branch of Russian Academy of Sciences Orenburg Russia
5. Department of Hygiene and Epidemiology Orenburg State Medical University Orenburg Russia