I saw dr hsiung after having suffered 4 surgeries to fix my anal fistula failed by another colorectal surgeon. He was a godsend and he was able to locate the fistula where the other surgeon could not find. He used an old fashioned technique of a cutting seton to heal the fistula. I'm soo very happy he was the only one who was skillful enough to to finally cure me. Highly recommend him to anyone out there suffering.