Pechlivanova, Daniela http://orcid.org/0000-0001-7727-8762
Krumova, Ekaterina
Kostadinova, Nedelina
Mitreva-Staleva, Jeny
Grozdanov, Petar
Stoynev, Alexander
Funding for this research was provided by:
Medical University of Sofia, Bulgaria (Grant 20/2016)
Article History
Received: 3 April 2019
Accepted: 17 January 2020
First Online: 29 January 2020