My mother is in the First Hospital of Jida University, so she knows something. Several of my relatives did just that. The price is still relatively expensive. But the effect is still relatively good. It is said that this thing will fall off after being used for a long time and needs to be reinstalled. It's complicated. Call you. It's the telephone number of their hospital. You can consult. 856 12345, they get off work at 4: 30.
After all, this is the internet, and things are still not accurate. I suggest consulting a doctor.