Studi Epidemiologi Infeksi Helicobacter Pylori & Faktor Virulensi Cag Pathogenecity Island (Cag-PAI) Di Indonesia Timur Dihubungkan Dengan Derajat Histopatologi = Epidemiological Study of H.pylori infection, Cag-PAI virulence factor in Eastern Indonesia in Correlation with Histology