The patients from onco - hematological section, are undergoing the most difficult chemotherapy, in order to treat this heavy illness. In most cases, its duration lasts for 4 - 6 hours, sometimes 120 - hours (5 days). Such long term care is difficult for little children. It causes depression, pain, fear, and disturbance.
The constant presence of a clown in a hospital will increase the clown's communication with children with leukemia, which in turn will cause an increase in positive emotions in sick children. Laughter, dancing and cheerful mood cause a surge of positive emotions, which means a surge of happiness hormones that strengthen immunity and destroy cancer cells, thus increasing the possibility of recovery
According to the protocol, the course of treatment lasts from 9 months for 13 months in 4 stages. The total number of patients is 120 children per year, many of the children undergo re-treatment, because within 5 years the probability of relapse is high.