Clinical observation of partial amputation of internal sphincter muscle of anus by using sickle hooks in treatment of old anal fissure.
YANG Yongfeng,WENG Shengbin,ZHANG Jianjun
Medical Reserch and Education . 2011, (4): 18 -20 .  DOI: 10.3969/j.issn.1674-490X.2011.04.004