1 Department of Endocrinology and metabolic diseases, The First Affiliated Hospital of Shantou University Medical College, 515000, Shantou, Guangdong, PR China.
2 Department of Endocrinology and metabolic diseases, The First Affiliated Hospital of Shantou University Medical College, 515000, Shantou, Guangdong, PR China. kaijianhou@126.com.
3 Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, New York, NY, 11439, USA. Chenz@stjohns.edu.