Preliminary Study on Hepatocyte-Targeted Phosphorus-31 MRS Using ATP-Loaded Galactosylated Chitosan Oligosaccharide Nanoparticles - Ri-Sheng Yu; Xiu-Liang Zhu; Jian-Zhong Sun; Dan Shi; Ying Chen; Zhi-Kang Wang; Ke-Zhong Tang; Yong-Zhong Du (Gastroenterology Research and Practice)