The magnetic ring and the ostomy.
D003125:Colostomy / Q000295:instrumentation* / Q000379:methods; D005069:Evaluation Studies as Topic; D005500:Follow-Up Studies; D006801:Humans; D007081:Ileostomy / Q000295:instrumentation* / Q000379:methods; D008280:Magnetics; D011182:Postoperative Care; D011183:Postoperative Complications; D011300:Preoperative Care