bibliographicCitation |
Ryu JH, Shim JH, Yeom JH, Shin WJ, Cho SY, Jeon WJ. Ultrasound-guided greater occipital nerve block with botulinum toxin for patients with chronic headache in the occipital area: a randomized controlled trial. Korean J Anesthesiol. 2019 Nov;72(5):479–85. PMID: 31159537; PMCID: PMC6781206. |