reduced water injection pressure and im-proved injection capacity

cranial extradural empyema

Extradural

extradural block

Extradural catheter

extradural cavity

extradural cleft

extradural cyst

Extradural hematoma

Extradural intra-vertebral canal tumor

extradural lacuna

Extradural optic nerve decompression

extradural pipe

Extradural space

Extradural tumor

Nontraumatic extradural haemorrhage

Motherwort Powder Injection

(14AA) Compound Amino Acid Injection (l4AA)

(18AA) Compound Amino Acid Injection (l8AA)