Clinical efficacy of transanal opening of intersphincteric space approach combined with loose seton in the treatment of complex anal fistula 
YUAN Hexue , PAN Chunlai, LIU Zongjian, ZHANG Yong, LUO Fang, ZHU Na.
The Journal of Practical Medicine . 2023, (9): 1123 -1126 .  DOI: 10.3969/j.issn.1006⁃5725.2023.09.010