1)Engel AF, Kamm MA, Bartram CI, et al:Relationship of symptoms in faecal incontinence to specific sphincter abnormalities. Int J Colorectal Dis 10:152-155, 1995
2)Hiltunen KM:Anal manometric findings in patients with anal incontinence. Dis Col Rectum 28:925-928, 1985
3)Monk DN, Mills P, Jeacock J, et al:Combining the strength-duration curve of the external anal sphincter with manometry for the assessment of fecal incontinence. Br J Surg 85:1389-1393, 1998
4)Holmberg A, Graf W, Osterberg A, et al:Anorectal mano-volumetry in the diagnosis of fecal incontinence. Dis Colon Rectum 38:502-508, 1995
5)Zbar AP, Kmiot WA, Aslam M, et al:Use of vector volume manometry and endoanal magnetic resonance imaging in the adult femal for assessment of anal sphincter dysfunction. Dis Colon Rectum 42:1411-1418, 1999
6)Samarasekara DN, Wright Y, Lowndes RH, et al:Comparison of vector symmetry index and endoanal ultrasonography in the diagnosis of anal sphincter disruption. Tech Coloproctol 12:211-215, 2008
7)Grande M, Cadeddu F, Sileri P, et al:Anal vector volume analysis:an effective tool in the management of pelvic floor disorders. Tech Coloproctol 15:31-37, 2011
8)Kang S-B, Kim N, Lee K-H, et al:Anal sphincter asymmetry in anal continence after restorative proctectomy for rectal cancer. World J Surg 32:2083-2088, 2008
9)Hirano A, Koda K, Kosugi C, et al:Damage to anal sphincter/levator ani muscles caused by operative procedure in anal sphincter-preserving operation for rectal cancer. Am J Surg 201:508-513, 2011
10)Damon H, Henry L, Barth X, et al:Fecal incontinence in females with a past history of vaginal delivery:significance of anal sphincter defects detected by ultrasound. Dis Colon Rectum 45:1445-1451, 2002
11)Schizas AMP, Emmanuel AV, Williams AB:Anal canal vector volume manometry. Dis Colon Rectum 54:759-768, 2011