1. Department of Plant Physiology, University of Belgrade, Institute for Biological Research “Siniša Stanković” - National Institute of Republic of Serbia, Belgrade, Serbia
2. Institute for Medicinal Plant Research “dr Josif Pančić” Belgrade, Belgrade, Serbia
3. ENT Clinic, Clinical Hospital Centre Zvezdara, Belgrade, Serbia
4. Centro de Investigação de Montanha (CIMO), Instituto Politécnico de BragançaCampus de Santa Apolónia, Bragança, Portugal