Varis, Samloff, Ihämaki et al.: "An appraisal of tests for severe atrophic gastritis in relatives of patients with pernicious anemia." in: Digestive diseases and sciences, Vol. 24, Issue 3, pp. 187-91, 1979 (PubMed).
Farinati F, Di Mario F, Plebani M et al.: "Pepsinogen A/pepsinogen C or pepsinogen A multiplied by gastrin in the diagnosis of gastric cancer?" in: Ital J Gastroenterol, Vol. 23, Issue 4, pp. 194-6, 1991 (PubMed).
Sipponen, Kekki, Haapakoski et al.: "Gastric cancer risk in chronic atrophic gastritis: statistical calculations of cross-sectional data." in: International journal of cancer. Journal international du cancer, Vol. 35, Issue 2, pp. 173-7, 1985 (PubMed).
Kikuchi S, Wada O, Miki K et al.: "Serum pepsinogen as a new marker for gastric carcinoma among young adults. Research Group on Prevention of Gastric Carcinoma among Young Adults." in: Cancer, Vol. 73, Issue 11, pp. 2695-702, 1994 (PubMed).
Hattori, Tashiro, Kawamoto et al.: "Sensitivity and specificity of mass screening for gastric cancer using the measurment of serum pepsinogens." in: Japanese journal of cancer research : Gann, Vol. 86, Issue 12, pp. 1210-5, 1996 (PubMed).
Yoshihara, Sumii, Haruma et al.: "The usefulness of gastric mass screening using serum pepsinogen levels compared with photofluorography." in: Hiroshima journal of medical sciences, Vol. 46, Issue 2, pp. 81-6, 1997 (PubMed).
Aoki K, Misumi J, Kimura T et al.: "Evaluation of cutoff levels for screening of gastric cancer using serum pepsinogens and distributions of levels of serum pepsinogen I, II and of PG I/PG II ratios in a gastric cancer case-control study." in: J Epidemiol, Vol. 7, Issue 3, pp. 143-51, 1997 (PubMed).
Yoshihara M, Sumii K, Haruma K et al.: "Correlation of ratio of serum pepsinogen I and II with prevalence of gastric cancer and adenoma in Japanese subjects." in: Am J Gastroenterol, Vol. 93, Issue 7, pp. 1090-6, 1998 (PubMed).