Pietrzyk, Barbara
Wyskida, Katarzyna
Ficek, Joanna
Kolonko, Aureliusz
Ficek, Rafał
Więcek, Andrzej
Olszanecka-Glinianowicz, Magdalena
Chudek, Jerzy
Funding for this research was provided by:
Medical University of Silesia in Katowice (KNW-1-004/N/7/0)
Article History
Received: 27 September 2018
Accepted: 7 December 2018
First Online: 24 December 2018
Compliance with ethical standards
:
: Authors declare that have no conflict of interest.
: All procedures performed were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki declaration with its later amendments.
: Informed consent was obtained from all individual participants included in the study.