1 Section of Integrative Physiology and Metabolism, Joslin Diabetes Center and Department of Medicine, Harvard Medical School, Boston, MA, United States.
2 Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.
3 Center for Stem Cell Biology and Tissue Engineering, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-sen University, Guangzhou, China.
4 State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China.
5 Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.