1. Program of Solid Oncology, Section of Pediatric Oncology, Clinical Academic Department of Pediatrics, National Research Center for Maternal and Child Health, University Medical Center (UMC), Astana 010000, Kazakhstan
2. Section of Pathology, Clinical Academic Department of Laboratory Medicine, Republican Diagnostic Center, University Medical Center (UMC), Astana 010000, Kazakhstan
3. Section of Pediatric Oncology, Clinical Academic Department of Pediatrics, University Medical Center (UMC), Astana 010000, Kazakhstan
4. Associate Professor of Pediatrics, School of Medicine, Nazarbayev University, Kerei-Zhanibek Str. 5/1, Astana 010000, Kazakhstan
5. Clinical Academic Department of Pediatrics, National Research Center for Maternal and Child Health, University Medical Center (UMC), Astana 010000, Kazakhstan