Wojciechowski, Tomasz http://orcid.org/0000-0002-3639-4422
Skadorwa, Tymon
Nève de Mévergnies, Jean-Gualbert
Niemczyk, Kazimierz
Article History
Received: 3 December 2018
Accepted: 12 May 2019
First Online: 20 May 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This retrospective study was approved by the Ethics Committee of Medical University of Warsaw (decision number KB/69/2015), and abides by the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.