Ilic, Vesna
Nikitovic, Marina
Maric, Gorica
Jovanovic, Aleksa
Paripovic, Lejla
Bokun, Jelena
Stanic, Dragana
Vukovic, Marija Popovic
Tepavcevic, Darija Kisic
Pekmezovic, Tatjana
Funding for this research was provided by:
Ministarstvo prosvete, nauke i tehnološkog razvoja Republike Srbije (175087, 175087, 175087, 175087)
Article History
Received: 8 May 2019
Accepted: 4 February 2020
First Online: 10 February 2020
Compliance with ethical standards
: Following detailed information about the aims of the study, all parents signed inform consent for participation in the research and all of them accepted to take a part in the investigation. Study was approved by the Ethical Commission of the Faculty of Medicine, University of Belgrade.
: The authors declare that they have no conflict of interest.