Jinlei Li, MD PhD FASA Associate ProfessorYale University Department of AnesthesiologyDirector of Regional Anesthesia Yale New Haven HealthNew Haven, CT Wei Jiang, MD, PhDProfessor, ChairmanShanghai Sixth People's Hospital Affiliated Shanghai Jiaotong UniversityShanghai,China Nalini Vadivelu M.D.ProfessorDepartment of Anesthesiology Yale UniversityClinical Director of Ambulatory Pain YNHHNew Haven, CT*Co-editor of Essentials of Pain Management and Essentials of Regional Anesthesia, both by Springer, Pocket pain medicine by Lippincott Williams and Wilkins and Perioperative pain medicine for orthopedics and spine surgery by Oxford Press.