Blood-group A and giardiasis.
D000017:ABO Blood-Group System; D000126:Achlorhydria / Q000150:complications; D004405:Dysentery, Bacillary / Q000150:complications; D005873:Giardiasis / Q000097:blood* / Q000150:complications; D012480:Salmonella Infections / Q000150:complications
D000017:ABO Blood-Group System