1. Department of Molecular Imaging, School of Medical Technology, Qiqihar Medical University, Qiqihar, Heilongjiang 161006, P.R. China
2. Department of Gastroenterology of Southwest Hospital Army Medical University (Third Military Medical University), Chongqing 400038, P.R. China
3. Linyi Hospital of Traditional Chinese Medicine, Linyi 276005, P. R. China
4. Key Laboratory of Detection Technology for Tumor Makers, School of Chemistry and Chemical Engineering, Linyi University, Linyi 276005, P. R. China
5. TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, No. 39 Shi-er-qiao Road, Chengdu 610072, Sichuan, P.R. China