Karalexi, M.A. Servitzoglou, M. Moschovi, M. Moiseenko, R. Bouka, P. Ntzani, E. Kachanov, D. Petridou, E.T. Antoniadi, K. Baka, M. Dana, H. Gavra, M. Hatzipantelis, E. Kourti, M. Malama, A. Papaconstantinou, E. Pelagiadis, I. Polychronopoulou, S. Stefanaki, K. Steiakaki, E. Strantzia, K. Akhaladze, D. Filin, A. Varfolomeeva, S. NARECHEM-ST collaborative group Moscow childhood liver tumor study group, Survival and prognostic factors for childhood malignant liver tumors: analysis of harmonized clinical data, Cancer Epidemiology and Prevention Biomarkers, (70), 2021, Elsevier Ireland Ltd,