Correspondance
Caihua Sang, MD, and Changsheng Ma, MD, Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, No 2, Anzhen Road, Chaoyang District, 100029 Beijing, China. Email: sch9613070 @sina.com and chshma@vip.sina.com
Disclosure: Changsheng Ma has received honoraria for presentations from AstraZeneca, Bayer Healthcare, Boehringer Ingelheim, Bristol Myers Squibb, Johnson and Johnson, and Pfizer. The other authors have no conflict of interest.