1. Department of Urology, Guang An Men Hospital, China Academy of Chinese Medical Science, Beijing, China
2. Department of Internal Medicine, Guang An Men Hospital, China Academy of Chinese Medical Science, Beijing, China
3. Section of Complementary and Integrative Medicine, Division of General Internal Medicine, Mayo Clinic, Rochester, Minnesota, USA
4. Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Mayo Clinic, Rochester, Minnesota, USA