Affiliation: | 1. Department of Respiratory Diseases, the Affiliated Huai''an Hospital of Xuzhou Medical College, Huai''an, China;2. Department of Clinical Laboratory, the Affiliated Huai''an Hospital of Xuzhou Medical College, Huai''an, China;3. Department of Nephrology, the Affiliated Huai''an Hospital of Xuzhou Medical College, Huai''an, China |