Document Type : Research Articles
Authors
1 1Jan Grodek State University in Sanok, Medical Institute, Mickiewicza 21, 38-500 Sanok, Poland.
2 The President Stanisław Wojciechowski State University of Applied Sciences in Kalisz, Nowy Świat 4, 62-800 Kalisz, Poland.
3 Polish Public Health Association, Bartla 5, 51-618 Wrocław, Poland.
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