About ASAKA M
About Hokkaido Univ. Graduate School of Medicine, Sapporo
About Internal Medicine
About Helicobacter pylori
About randomized controlled trial
About Tumors(=neoplasms)of digestive system
About Carcinogenic mechanisms and factors
About Infectious diseases,parasitics diseases in general.
About Helicobacter
About 感染
About 胃癌