Doctor Ka-Shun Cheng specializes in anesthesia for otorhinolaryngology and chest surgery, with over 20 years of experience. He focuses on the anesthesia for respiratory tracts, especially for respiratory difficulties, respiratory tract related surgery and difficult respiratory tract cases. Since respiratory diseases are life-threatening or might result in severe complications, Doctor Cheng undergoes life-threatening or severe case research. His abundant experience and performance in clinical treatment has distinguished himself from applications across many countries and was granted clinic research fellow at Harvard Medical School and conducted 1 year research at Brigham and Women’s hospital.