Dr Hanrong Cheng
PhD, Chief physician, RPSGT
Deputy Director (in charge) of the Department of Sleep Medicine, Shenzhen People's Hospital
Visiting associate professor at Stanford University, USA
Chairman of the Sleep Medicine Committee of the Shenzhen Medical Doctors Association
Editor-in-Chief Popular science books "Good Sleep Handbook"
Specializes in Cognitive behavioural therapy for insomnia, diagnosis and treatment of OSA, circadian rhythm disorders, narcolepsy, etc