umbilicus造句
ObjectiveToinvestigatetheadvantagesoftheperitoneoscopicappendectomythroughtheumbilicuswithZhousumbilicuslancetandtrocarballoon.Figure1.obliquescanabovetheumbilicusshowingthezoneoftransition(arrow)betw...
ObjectiveToinvestigatetheadvantagesoftheperitoneoscopicappendectomythroughtheumbilicuswithZhousumbilicuslancetandtrocarballoon.Figure1.obliquescanabovetheumbilicusshowingthezoneoftransition(arrow)betw...