FGF9 and hepatocellular carcinoma: Most of the FGF9‐positive HCC exhibited also elevated levels of FGFR3‐IIIb or FGFR3‐IIIc mRNA causing that 82% of the tumours with overexpression of FGF9 also showed upregulated FGFR3‐IIIb and/or FGFR3‐IIIc (Figure 3B, Table S1).