Michałowski, Paweł Piotr http://orcid.org/0000-0002-3299-4092
Kaszub, Wawrzyniec
Pasternak, Iwona http://orcid.org/0000-0001-7071-2298
Strupiński, Włodek
Article History
Received: 16 March 2017
Accepted: 3 July 2017
First Online: 7 August 2017
Competing Interests
: The authors declare that they have no competing interests.