The First Affiliated Hospital of Zheng Da University is one of the top 100 hospitals in China, a third-class first-class hospital and a national baby-friendly hospital. Chief physician, professor and doctoral supervisor Liu has been engaged in the medical treatment, scientific research and health care of internal medicine kidney diseases for more than 20 years, and has rich experience in the diagnosis and treatment of various chronic kidney diseases, the treatment and health care of critical patients with acute and chronic renal failure.