(Internal medicine) : Gastrointestinal diseases, Chronic esophagitis and gastritis, Functional gastrointestinal disorder (IBS), Gastrointestinal ulcer, Gastro-Esophageal Reflux Disease (GERD), Dyspepsia, Chronic constipation and diarrhea, Liver, Gallbladder, Pancreas and spleen disease, Obesity and Diseases of general internal medicine.

(Internal medicine) : Diseases of general internal medicine, Gastrointestinal diseases, Chronic gastroenteritis, Functional gastrointestinal disorder (FGID), Gastrointestinal ulcer, Gastro-Esophageal Reflux Disease (GERD), Dyspepsia, Chronic constipation and diarrhea, Liver, Gallbladder, Pancreas and spleen disease, Cirrhosis, Hepatitis B, Disease in the elderly, Insomnia, Chronic Fatigue syndrome etc.