Laparoscopic repair of perforated peptic ulcer: a multicenter, propensity score matching analysis

HIGHLIGHTS

• who: Chang Woo Kim from the South Korea between January , to December , were retrospectively reviewedThe study protocol was approved by the Institutional Review Board at each participating institution and written informed consent was waived due to the observational and retrospective nature of the study (Institutional Review Board of Kyung Hee University Hospital at Gangdong, Hallym University Dongtan Sacred Heart Hospital Institutional Review Board, Ethics Committee, Hallym University Kangnam Sacred Heart Hospital Institutional Review Board, Ethics Committee, Hallym University Sacred Heart Hospital Institutional Review Board, Ethics Committee and Hallym University Chucheon Sacred Heart Hospital Institutional Review Board, Ethics . . .
  

   

  

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