Makowiec-DÄ…browska, Teresa
Gadzicka, Elżbieta
Siedlecka, Jadwiga
Szyjkowska, Agata
Viebig, Piotr
Kozak, Piotr
Bortkiewicz, Alicja
Funding for this research was provided by:
The National Center for Research and Development, Poland (UDA-POIG.01.03.01-10-085/09 AND PROJECT PBS3 / B9 / 29/2015)
Article History
Received: 8 February 2018
Revised: 28 September 2018
Accepted: 29 October 2018
First Online: 8 November 2018
Compliance with ethical standards
: The study protocol was approved by the Regional Bioethics Commission of the Nofer Institute of Occupational Medicine in Lodz.