Editor-in-Chief

Andrzej Wojtyła - Medical Faculty, Calisia University, Kalisz, Poland

Scientific Editor-in-Chief

Witold Zatoński - Institute - European Observatory of Health Inequalities, Calisia University, Kalisz, Poland

Health Promotion Foundation, Nadarzyn, Poland

Lead Assistant Editor

Kinga Janik-Koncewicz - Institute - European Observatory of Health Inequalities, Calisia University, Kalisz, Poland

Health Promotion Foundation, Nadarzyn, Poland

Assistant Editors

Mateusz Zatoński - London School of Hygiene and Tropical Medicine, United Kingdom

Institute - European Observatory of Health Inequalities, Calisia University, Kalisz, Poland

Health Promotion Foundation, Nadarzyn, Poland

Cezary Wojtyła - Institute - European Observatory of Health Inequalities, Calisia University, Kalisz, Poland

Technical Editor

Paulina Wojtyła-Buciora - Medical Faculty, Calisia University, Kalisz, Poland

Statistics Editors

Urszula Sulkowska - Maria Skłodowska-Curie National Oncology Institute - National Research Institute

Rafał Gorczyca - Medical Faculty, Calisia University, Kalisz, Poland

Native Speakers

Richard Bialy, Scott Thompson, Peter Hołownia

Editorial Secretary

Paulina Wojtyła-Buciora - Medical Faculty, Calisia University, Kalisz, Poland

Copyright: © Calisia University, Kalisz, Poland.

This is an Open Access journal, all articles are distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) License (http://creativecommons.org/licenses/by-nc-sa/4.0/), allowing third parties to copy and redistribute the material in any medium or format and to remix, transform, and build upon the material, provided the original work is properly cited and states its license.

The rights to the article are usually transferred by the authors to the owner of the journal, who makes it available under the Creative Commons license. However, if the author does not want to transfer the copyright to the publisher, he/she may contact the editorial office and set separate rules - under which the editorial office may publish an article in the journal. For the detailed information, please contact with editorial office.