PT - JOURNAL ARTICLE AU - Macafee, A. L. TI - ABO Blood Groups and Gastric Ulcer AID - 10.1136/jmg.2.1.24 DP - 1965 Mar 01 TA - Journal of Medical Genetics PG - 24--25 VI - 2 IP - 1 4099 - http://jmg.bmj.com/content/2/1/24.short 4100 - http://jmg.bmj.com/content/2/1/24.full SO - J Med Genet1965 Mar 01; 2