1. Nursing Department , University of Hong Kong-Shenzhen Hospital , Shenzhen , Guangdong 518053 , China
2. Endocrine Department , University of Hong Kong-Shenzhen Hospital , Shenzhen , Guangdong 518053 , China
3. Medicine Department , University of Hong Kong-Shenzhen Hospital , Shenzhen , Guangdong 518053 , China
4. Hemodialysis Department , University of Hong Kong-Shenzhen Hospital , Shenzhen , Guangdong 518053 , China