I have kidney and tinnitus problems for a while. Tried many ways, but nothing worked. Then I tried with Dr Xiao who provided best device I had ever had as I felt much better only after second visit. He answered all the questions I asked patiently and provided a lot of advice about what I should be more careful to avoid these problems to come back again. What he charges is really fair for the service he provides as he not only tries to test your illness but also your potential problem. He treat each individual differently with his heart and passion. His excellent skills, working attitude and morale are highly recommended.