1. Surgical anatomy of the anal canal and operative treatment of haemorrhoids;Milligan;Lancet,1937
2. Stapled versus conventional surgery for hemorrhoids;Jayaraman;Cochrane Database Syst Rev,2006
3. Longo A Treatment of hemorrhoids disease by reduction of mucosa and hemorrhoidal prolapse with a circular suturing device: a new procedure 1998
4. A novel therapy for internal hemorrhoids: ligation of the hemorrhoidal artery with a newly devised instrument (Moricorn) in conjunction with a Doppler flowmeter;Morinaga;Am J Gastroenterol,1995
5. Transanal hemorrhoidal dearterialization: a systematic review;Giordano;Dis Colon Rectum,2009