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Comparison of the serum pepsinogen (PG) I level (A), PG II level (B), and the PG I/PG II ratio (C) in Helicobacter-pylori-positive and -negative cases before and 1 year after H. pylori eradication. Data are presented as mean and standard error values (Reproduced with permission from Kang JM, et al. Helicobacter 2008;13:146-156.32).
Hp, Helicobacter pylori.
