GSTM1 and intrahepatic cholangiocarcinoma: We found that Hb blood level decreased from 16.3 ± 2.5 g/dL on day 1 day to 9.9 ± 1.2 g/dL (p < 0.001) in the 36th week of life the ICC group, from 17.2 ± 3.1 g/dL to 10.0 ± 1.0 g/dL (p < 0.001) in the DCC group, and from 17.7 ± 2.3 g/dL to 10.3 ± 1.8 g/dL (p < 0.001) in the UCM group.