Quantitative evaluation of bone marrow fat content and unsaturated fatty index in young male soccer players using proton magnetic resonance spectroscopy (1H-MRS): a preliminary study - Wang, Jian; Yi, Peiwei; Huang, Yaobin; Yu, Qinqin; Mei, Yingjie; Chen, Jialing; Feng, Yanqiu; Zhang, Xiaodong (Quantitative Imaging in Medicine and Surgery, 2021)