1Pololsky ER, Curcillo II PG, Rottman SJ, et al. Single port access (SPA) surgery - initial experience of a novel minimal access approach applied across surgical spetiahies. Surg En- dosc,2008, (6)22:172 - 173.
1Kala Z, Hanke I, Neumann C. A modified technic in laparoscopy-assisted appendectomy-atransumbilical approach through a single port[J]. Rozhl Chir,1996,75 ( 1 ) :15-18.
2Podolsky ER, Curcillo II PG, Rottman SJ, et al. Single port access (SPA) surgery-initial experience of a novel minimal access approach applied across surgical specialties[ J]. Surg Endosc ,2008,22(suppl) :s172.