Jackowska, Joanna
Sjogren, Elisabeth V
Bartochowska, Anna
Czerniejewska-Wolska, Hanna
Piersiala, Krzysztof http://orcid.org/0000-0003-3844-5999
Wierzbicka, Malgorzata
Article History
Received: 27 November 2017
Accepted: 6 March 2018
First Online: 20 March 2018
Compliance with ethical standards
:
: All procedures performed in the study were in accordance with the ethical standards of Poznan University of Medical Sciences and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. The study was approved by Bioethical Committee of Poznan University of Medical Sciences.
: The authors declare that they have no conflict of interest.
: All patients provided written informed consent prior to the surgery.