Shomurodov Kahramon Узбекистан Department of Maxillo-Facial Surgery, Tashkent State Dental Institute, Makhtumkuli 103, Tashkent, Uzbekistan

Mahdi Ahmed M Ирак Anesthesia Techniques Department, Al-Mustaqbal University College, Babylon, Iraq

Lis Marcin Польша Head of Faculty of Applied Sciences, WSB University in Dabrowa Górnicza, Poland