Zhao Zhiqiang, Liu Tong, Wang Xinghua, Li Guangping
Department of Cardiology, Tianjin Institute of Cardiology, Second Hospital of Tianjin Medical University, Tianjin 300211, People's Republic of China.
Int J Cardiol. 2013 Oct 12;168(5):e135-7. doi: 10.1016/j.ijcard.2013.08.014. Epub 2013 Aug 14.