Table 2 Exclusion criteria

1) Patients unable or unwilling to receive treatment

2) Allergic to contrast medium or drugs planned to be injected

3) Untreated local infection at the planned surgical site

4) Patients who cannot cooperate during the procedure or have a history of mental disease

5) Pregnancy

6) Receiving anticoagulant therapy

7) Congenital or surgical anatomical diseases which affect the safety and success of the procedure

8) Systemic infection

9) Severe respiratory or cardiovascular diseases

10) Immunosuppression