Dr. Yuan-Yang Cheng is the director of Department of Physical Medicine and Rehabilitation in Taichung Veterans General Hospital. He is also the vice chairman of the academic committee of Taiwan Academy of Cardiovascular and Pulmonary Rehabilitation and assistant professor of Faculty of Medicine in National Yang-Ming University. His work focuses specifically on the field of pulmonary rehabilitation, pain medicine and exercise training. His recent publications this year could be found in Archives of Physical Medicine and Rehabilitation and Plos One. His E-mail is rifampin@gmail.com, and he welcomes any discussions regarding to the field of cardiopulmonary rehabilitation through the E-mail.