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A majority of respondents (64%) inject into the internal sphincter and a majority (53%) inject into 4 quadrants in the anal canal circumference. Some respondents perform concomitant manual dilatation (34%) or fissurectomy (38%). Concomitant topical muscle relaxing agents are not used uniformly among respondents. Injection of BT for CAF is used commonly by colorectal surgeons. There is consensus on BT dosage, administration site, technique, and the use of monitored anesthesia care. Injection of BT for CAF is used commonly by colorectal sur