Dr. Li's superb medical skills, warm and thoughtful service and selfless dedication not only brought warmth to patients and their families, but also infected more people to be diligent and dedicated and benefit the society.

Li Youshan, MD, chief physician, professor, doctoral supervisor, studied under Professor Yang Bohua, a famous peripheral vascular disease expert. At present, he is the chief physician of vascular department of Dongzhimen Hospital of Beijing University of Chinese Medicine. Young Deputy Director of Peripheral Vascular Disease Professional Committee of China Association of Integrated Traditional Chinese and Western Medicine, Standing Director and Deputy Secretary-General of Safety Research Committee of External Treatment of Traditional Chinese Medicine of World Federation of Traditional Chinese Medicine, Standing Member of Peripheral Vascular Disease Professional Committee of Beijing Association of Integrated Traditional Chinese and Western Medicine.