Hinova-Palova, Dimka
Kotov, Georgi
Landzhov, Boycho
Edelstein, Lawrence
Iliev, Alexandar
Stanchev, Stancho
Georgiev, Georgi P.
Kirkov, Vidin
Angelov, Teodor
Nikolov, Dimitar
Fakih, Khodor
Paloff, Adrian
Article History
Received: 16 April 2019
Accepted: 9 July 2019
First Online: 13 July 2019
Compliance with ethical standards
:
: All authors declare that they have no conflicts of interest.