see here

first_text= Symposium: 10 Basic principles to make your primary TKA better 10.10.2013, Golden Sands Resort Company presentation: Novelties and Traditional in Patient Anaesthesia in the Early Postoperative Period in Otolaryngology and Head and Neck Surgery 21.09.2013, Pravets Symposium - INNOVATIONS IN NASAL CARE 28.09.2012, Golden sands Symposium - Efficacy of the Application of FASTUM GEL in the Field of Physical Therapy 08.10.2009, Sofia