求助英文文献2篇，急需啊! 谢谢!!!

hya7408

1.Optimized transumbilical endoscopic cholecystectomy: a randomized comparison of two procedures. Hu H, Zhu J, Wang W, Huang A.7 l( ~  t( G$ {
Surg Endosc. 2010 May;24(5):1080-4. Epub 2009 Nov 13. PMID: 19911223 + I. A: m" M. e
2.Mini-laparotomy cholecystectomy versus laparoscopic cholecystectomy: which way to go? Vagenas K, Spyrakopoulos P, Karanikolas M, Sakelaropoulos G, Maroulis I, Karavias D. Surg Laparosc Endosc Percutan Tech. 2006 Oct;16(5):321-4. PMID: 17057572
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hya7408

谢谢