Xiao H, Peng BG, Ma K, Huang D, Liu XG, Lv Y, Liu Q, Lu LJ, Liu JF, Li YM, Song T, Tao W, Shen W, Yang XQ, Wang L, Zhang XM, Zhuang ZG, Liu H, Liu YQ. Expert panel’s guideline on cervicogenic headache: The Chinese Association for the Study of Pain recommendation. World J Clin Cases 2021; 9(9): 2027-2036 [PMID: 33850922 DOI: 10.12998/wjcc.v9.i9.2027]