Urine Discoloration After Voiding in a Boy With Ulcerative Colitis Using Mesalamine Zeef, Dagmar; de Meij, Tim; Bökenkamp, Arend Zeef, Dagmar; de Meij, Tim; Bökenkamp, Arend Less JPGN Reports. 3(1):e167, February 2022. Favorite PDF Permissions Open