Peptic ulcer, secretor status and ABO blood groups in an Indian population.
D000017:ABO Blood-Group System; D006801:Humans; D007070:Immunoglobulin A; D007071:Immunoglobulin A, Secretory; D007194:India; D010437:Peptic Ulcer / Q000453:epidemiology*
D000017:ABO Blood-Group System; D007070:Immunoglobulin A; D007071:Immunoglobulin A, Secretory