title: The semiopen first umbilical trocar access technique in laparoscopic surgery: easy and safe.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D010535:Laparoscopy / Q000009:adverse effects / Q000379:methods*; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D012449:Safety; D013525:Surgical Instruments; D014472:Umbilicus