Departments of Oncology;
Asan Medical Center;
University of Ulsan College of Medicine;
Seoul 05505;
Republic of Korea;
Department of Pathology;
Asan Medical Center;
University of Ulsan College of Medicine;
Seoul 05505;
Republic of Korea;
Asan Institute for Life Science;
Asan Medical Center;
University of Ulsan College of Medicine;
Seoul 05505;
Republic of Korea;
MET; amplification; advanced; gastric; cancer; prognosis; quantitative; real-time; polymerase; chain; reaction;