Early changes in left ventricular myocardial function by 2D speckle tracking layer-specific technique in neonates with hyperbilirubinemia - Chen, Zimian; Zhang, Suming; Fang, Aijuan; Shao, Jun; Shen, Hong; Sun, Bugao; Guo, Guanjun; Liu, Lei (Quantitative Imaging in Medicine and Surgery, 2021)