Yao GH, Deng Y, Liu Y, Xu MJ, Zhang C, Deng YB, Ren WD, Li ZA, Tang H, Zhang QB, Mu YM, Fang LG, Zhang M, Yin LX, Zhang Y. Echocardiographic measurements in normal chinese adults focusing on cardiac chambers and great arteries: a prospective, nationwide, and multicenter study. J Am Soc Echocardiogr. 2015 May; 28(5):570-9.