1 Department of Preventive Medicine, Lithuanian University of Health Sciences, LT-49264 Kaunas, Lithuania.
2 Department of Hygiene and Dietetics, Jagiellonian University Medical College, 31-034 Krakow, Poland.
3 Cooperative Research Group for Evidence-Based Public Health (EBPH), Institute for Public Health and Nursing Research, University of Bremen and Leibniz Institute for Prevention Research and Epidemiology-BIPS, Achterstraße 30, 28359 Bremen, Germany.
4 Health Sciences Bremen, University of Bremen, Bibliothekstraße 1, 28359 Bremen, Germany.