Table 3.

Incidence rate of studies of HBV infection and ICC/ECC.

Authors	Year	Country	Cancer group	HBV infection cases (n)	CCA cases (n)	Reference
Matsumoto et al.	2014	Japan	ICC	16	50	[11]
Luo et al	2014	China	ICC	608	1233	[12]
Liu et al.	2013	China	ICC	37	81	[13]
Yin et al.	2013	China	ICC	139	411	[14]
Zhou et al.	2013	China	ECC	88	239	[15]
Wu et al.	2013	China	ICC	97	138	[16]
Lee et al.	2013	China (Taiwan)	ICC	29	127	[17]
Yin et al.	2012	China	ICC	131	386	[19]
Qu et al.	2012	China	ECC	19	305	[20]
Jiang et al.	2011	China	ICC	44	102	[22]
Zhou et al.	2011	China	ICC	87	155	[23]
Zhou et al.	2010	China	ICC	154	317	[25]
Zhou et al.	2008	China	ICC	64	131	[26]
Lee et al.	2006	Korea	ICC	11	79	[29]
Asayama et al.	2002	Japan	ICC	8	68	[31]