R. N. Zelentsov
Northern State Medical University of the Ministry of Health of the Russian Federation
Russian Federation

Roman N. Zelentsov – Cand. Sc. (Med), Associate Professor of the Department of Family Medicine and Internal Diseases 

Troitskiy ave., 51, 163000 Arkhangelsk, Russian Federation 

E. I. Kuznetsova
Northern State Medical University of the Ministry of Health of the Russian Federation
Russian Federation

Evgeniya I. Kuznetsova – 6th–year student at the Faculty of Pediatrics

Troitskiy ave., 51, 163000 Arkhangelsk, Russian Federation 

L. V. Poskotinova
Northern State Medical University of the Ministry of Health of the Russian Federation; N. Laverov Federal Center for Integrated Arctic Research of the Ural Branch of the Russian Academy of Sciences
Russian Federation

Liliya V. Poskotinova – Dr. Sc. (Biol.), Cand. Sc. (Med.), Associated Professor, Chief Scientific Resercher, Head of the Biorhythmology Laboratory, Institute
of Environmental Physiology; Professor of the Department of Family Medicine and Internal Diseases

Troitskiy ave., 51, 163000 Arkhangelsk, Russian Federation 

Nikolsky Ave., 20, 163029 Arkhangelsk, Russian Federation

M. A. Sinayskaya
Northern State Medical University of the Ministry of Health of the Russian Federation
Russian Federation

Mariya A. Sinayskaya – Cand. Sc. (Med), Associate Professor of the Department of Family Medicine and Internal Diseases

Troitskiy ave., 51, 163000 Arkhangelsk, Russian Federation 

A. V. Kudryavtsev
Northern State Medical University of the Ministry of Health of the Russian Federation
Russian Federation

Alexander V. Kudryavtsev – Cand. Sc. (Med), Head of International Research Competence Centre, Central Scientific Research Laboratory

Troitskiy ave., 51, 163000 Arkhangelsk, Russian Federation