A hospital program on art therapy and music therapy ARTON is held at "TSARITSA YOANNA - ISUL" UMHAT - Clinic of Pediatric Clinical Hematology and Oncology, Sofia.

University Hospital "Queen Joanna" -  Sofia - Specialized Hospital for Active Treatment of children with Oncological and Hematological diseases is an independent, highly specialized hospital. It is the assignee of the Clinic of Pediatric Oncology and Hematology at the Department of Pediatrics of the Medical Academy. SBALDOHZ is the only specialized hospital in the country, which perform full volume of diagnostic and therapeutic activities for children from 0 to 18 years of age with blood diseases and solid tumors. Herein disclosed and work fully the first in Bulgaria sector for bone marrow transplantation / transplantation of hematopoietic stem cells /.