Malekian N, Bastani PB, Oveisgharan S, Nabaei G, et al. Preventive effect of greater occipital nerve block on patients with episodic migraine: A randomized double-blind placebo-controlled clinical trial. Cephalalgia 2021 Nov 17:3331024211058182. doi: 10.1177/03331024211058182.
PMID: 34786992