Comparison of ammonium alum and tannic acid as barium enema additives.
D000535:Aluminum; D001466:Barium Sulfate; D004733:Enema; D006801:Humans; D000644:Quaternary Ammonium Compounds; D013634:Tannins
D000644:Quaternary Ammonium Compounds; D013634:Tannins; D001466:Barium Sulfate; D000535:Aluminum