1. University Clinic of Dermatology, Medical FacultySs Cyril and Methodius University Skopje Macedonia
2. Faculty of Natural and Technical ScienceGoce Delcev University, Macedonia AMBICON Lab Stip Macedonia
3. Faculty of Medical SciencesGoce Delcev University Stip Macedonia
4. Acibadem Sistina Clinical Hospital Skopje Macedonia
5. Department of Dermatology and VenereologyTrakia University Stara Zagora Bulgaria
6. Acibadem City Clinic Tokuda Hospital Sofia Bulgaria