AFP and hepatitis B virus infection: No abnormal findings in the tests of blood and coagulation routine, urine and stool routine; no abnormal findings in the tests of kidney function, electrolyte, blood lipid and glycosylated hemoglobin; no abnormal findings in hepatitis B markers, hepatitis C antibody as well as alpha fetoprotein (AFP); antinuclear antibody (ANA), autoimmune liver disease-related antibodies, and immunoglobulin were normal.