6Bikhchandani J,Agarwal PN,Kant R,et al.Randomized controlled trial to compare the early and mid-term results of stapled versus open hemorrhoidectomy[J].Am J Surg,2005,189 (1):56-60.
7Petersen S,Hellmich G,Schumann D,et al.Early rectal stenosis following stapled rectal mucosectomy for hemorrhoids[J].BMC Surg,2004,21 (4):6.
3Hiltunen KM, Matikainen M. Anal dilatation, lateral subcutaneous sphincterotomy and haemorrhoidectomy for the treatment of second and third degree haemorrhoids. A prospective randomized study [J]. lnt Surg, 1992, 77(4): 261-263.
