Authors
Irena I. Gencheva-Angelova
Department of Clinical Laboratory, Clinical Immunology and Allergology, Medical University – Pleven, Bulgaria
Adelaida L. Ruseva
Department of Clinical Laboratory, Clinical Immunology and Allergology, Medical University – Pleven, Bulgaria
Juli I.Pastuhov
Department of Clinical Laboratory, Clinical Immunology and Allergology, Medical University – Pleven, Bulgaria