Liu Shuang, Yang Jun, Ma Chunyan, Tang Li
Department of Cardiovascular Test Center, First Hospital of China Medical University, No.155 Nanjingbei Street, Shenyang, Liaoneng 110001, China.
Eur J Echocardiogr. 2011 Oct;12(10):797. doi: 10.1093/ejechocard/jer097. Epub 2011 Jul 4.