About the Authors
- Judyta J. Gładykowska-Rzeczycka
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Affiliation Professor retired, Marusarzówny, Gdańsk, Poland
- Dariusz Nowakowski
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* E-mail: darekn@hot.pl
Affiliation Department of Anthropology, Wrocław University of Environmental and Life Sciences, Kożuchowska, Wrocław, Poland
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Conceived and designed the experiments: JJGR DN. Performed the experiments: DN. Analyzed the data: DN. Contributed reagents/materials/analysis tools: JJGR DN. Wrote the paper: DN.