Efficacy and safety of self-administered acupressure on symptoms, quality of life and nasal mucosal function in patients with perennial allergic rhinitis: study protocol for a rand... oleh Kai Li, Wei Huang, Rui-Jian Li, Xiao-Cong Feng, Zong Chen, Shu-Yi Tan, Mei-Feng Xie, Jian-Peng Huang, Ru-Jia Liu, Yun-Ying Li