3446470 SILC single-incision laparoscopic cholecystectomy 290 1618337 SLC Single-site laparoscopic colectomy 8 3404987 SALC single-access laparoscopic cholecystectomy 3 1985977 SILS-C single-incision laparoscopic cholecystectomy 2 3443278 SICL single-incision laparoscopic cholecystectomy 1 3678293 Solo-SILC single-incision laparoscopic cholecystectomy 1