CRA-API, Bee and Silkworm Research Unit Italy
Warsaw University of Life sciences Faculty of Veterinary Medicine Department of Pathology and Veterinary Poland
Plovdiv University „Paisii Hilendarski” Biological faculty, Department of Developmental Biology Bulgaria
University Ss. Cyril and Methodius in Skopje, Faculty of Agricultural Sciences and Food Macedonia
Certification Body of Honey Bee Queens Lab of Agricultural Zoology and Entomology Agricultural University of Athens Greece
Apiculture Division Warmia and Mazury University Sloneczna Poland
University of Zagreb Faculty of Agriculture Department for fisheries, beekeeping and special zoology Croatia
Hellenic Institute of Apiculture Greece
The Research Institute of Horticulture - Apiculture Division in Pulawy Poland
Department of Agroecology - Entomology and Plant Pathology Denmark