Since its conception in 2005, we believe that the Korean Laparoendoscopic Gastrointestinal Surgery Study (KLASS) group has played a pivotal role in laparoendoscopic technique and research in gastrointestinal surgery.

To develop diverse minimally invasive surgeries and to find concrete evidences for clinical application, the KLASS group conducted prospective multi-center phase III trials.

We published outstanding results in prestigious journals, which led to significant improvement in surgical practice.

Furthermore, we made a constant effort by continue intensive academic exchanges with Northeast Asian countries to establish a “global standard” of laparoendoscopic gastrointestinal surgery.

Go to the KLASS Website