FIG 4.

Partition of pediatric oncology research papers by cancer type: from EUR31 countries, Canada, USA, and from the Rest of the World. Percentages of regional totals. BON, malignant bone tumors; CA, Canada; EUR31, European Economic Area 31; GER, germ cell tumors, trophoblastic tumors, and neoplasms of gonads; KID, renal tumors; LEU, leukemias, myeloproliferative diseases, and myelodysplastic diseases; LIV, hepatic tumors; LYM, lymphomas and reticuloendothelial neoplasms; PNS, neuroblastoma and other peripheral nervous cell tumors; RoW, rest of the world; SAR, soft tissue and other extraosseous sarcomas; US, United States. (*) Refers to papers on any other identifiable tumor type as per ICCC-3 Code XI. It also includes papers where the anatomical site is not specified but the title makes clear that they are about pediatric cancer.