Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) PETROTOS AC,Single-incision multiport laparoendoscopic (SIMPLE) surgery : early evaluation of SIMPLE cholecystectomy in a community setting,Surg Endosc,,,2009,23,,2631-2634,https://cir.nii.ac.jp/crid/1570291226262288000,