Drahus, Michał http://orcid.org/0000-0001-5159-2104
Guzik, Piotr http://orcid.org/0000-0002-5019-4056
Waniak, Wacław http://orcid.org/0000-0001-6287-7332
Handzlik, Barbara http://orcid.org/0000-0001-7452-7647
Kurowski, Sebastian http://orcid.org/0000-0002-1557-0343
Xu, Siyi http://orcid.org/0000-0002-8808-4282
Article History
Received: 1 December 2017
Accepted: 6 March 2018
First Online: 1 May 2018
Competing interests
: The authors declare no competing interests.