Author/Authors :
IVANOVA, Stefka Department of Pharmaceutical Chemistry - Faculty of Pharmacy - Medical University Sofia, Sofia, Bulgaria , KIRKOVA-BOGDANOVA, Angelina Department of Medical Informatics - Biostatistics and E-Learning - Faculty of Public Health, Medical University Plovdiv, Plovdiv, Bulgaria , VAKRILOVA BECHEVA, Maria Speciality Rehabilitator - Medical College - Medical University Plovdiv, Plovdiv, Bulgaria
