Dr. Chang is a board certificated physiatrist. He excels in diagnostic and interventional ultrasound for musculoskeletal disorders. He is also skilled in meta-analysis, a statistical method widely used in evidence based medicine. He is now a clinical associate professor in National Taiwan University. He has more than 200 publications indexed in PubMed (https://pubmed.ncbi.nlm.nih.gov/?term=chang+kv&sort=date)