Authors
Jacek Nowacki
Interfaculty Institute of Maritime and Tropical Medicine, Medical University of Gdańsk, Gdynia, Poland
Maciej Matciak
Institute of Oceanography, University of Gdańsk, Gdynia, Poland
Maria Szymelfenig
Institute of Oceanography, University of Gdańsk, Gdynia, Poland
Marek Kowalewski
Institute of Oceanography, University of Gdańsk, Gdynia, Poland