1. Shalgrenska Academy, University of Gothenburg, Gothenburg 41390, Sweden
2. School of Public Health, Faculty of Medicine, Imperial College London, London SW7 2AZ, UK
3. International Research Competence Centre, Northern State Medical University, Arkhangelsk 163069, Russia
4. Department of Community Medicine, UiT The Arctic University of Norway, Tromsø N-9037, Norway
5. Research Institute of Internal and Preventive Medicine, Branch of Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk 630089, Russia
6. Department of Therapy, Haematology and Transfusiology, Novosibirsk State Medical University, Novosibirsk 630090, Russia