The evaluation of JAK inhibitors on effect and safety in alopecia areata: a systematic review and meta-analysis of 2018 patients oleh Mei-qi Mao, Yu-xin Ding, Jing Jing, Zhen-wei Tang, Yu-jie Miao, Xiao-shuang Yang, Yu-hong Chen, Sheng-zhao Chen, Xian-jie Wu, Zhong-fa Lu