I would like to express my deep gratitude to doctor Oleg Kirillov and nurse Larisa Vitalievna Pankratova for their professionalism, heartfelt warmth, conscientious performance of their official duties, and friendly attitude towards their patients. The colonoscopy I performed was at the highest level. Many thanks to the doctor for his golden hands, high medical skill, boundless patience. In such an invaluable profession, such doctors are needed! Low bow to you. Be always healthy and happy.