Radojicic, Verica
Keckarevic Markovic, Milica
Puac, Feđa
Kecmanovic, Miljana
Keckarevic, Dusan
Article History
Received: 5 December 2017
Accepted: 22 February 2018
First Online: 13 March 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in this study were in accordance with the ethical standards of the Serbian national research committee and with the 1964 Helsinki declaration and its later amendments. The study was approved by authorities of the Faculty of Biology at the University of Belgrade.