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. 2018 May 16;11:2865–2874. doi: 10.2147/OTT.S164651

Figure 1.

Figure 1

Numbers of published studies on radiotherapy for hepatocellular carcinoma over time. The counts were based on a search of the Scopus electronic database in March 2018 that was limited to original article. The search keywords included “hepatocellular carcinoma” AND “radiotherapy”.