Ligation of internal haemorrhoids.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002648:Child; D005260:Female; D006484:Hemorrhoids / Q000209:etiology / Q000601:surgery*; D006801:Humans; D008026:Ligation; D008297:Male; D008722:Methods; D008875:Middle Aged; D011183:Postoperative Complications; D012737:Sex Factors; D013927:Thrombosis / Q000209:etiology