The chemically defined diet and anorectal procedures.
D001003:Anal Canal / Q000601:surgery*; D004032:Diet; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D008875:Middle Aged; D010502:Perineum / Q000601:surgery; D011182:Postoperative Care; D012007:Rectum / Q000601:surgery*