Effects of Luo Han Guo on throat complications associated with tracheal intubation: a randomized controlled trial oleh Hui-Lian Tan, Yu-Kun Liang, Yong-Ming Li, Li-Yu Qiu, Rui Huang, Li Guo, Xiao-Hua Yang, Hui-Xia Lu, Hong-Mei Liang, Ai-Ping Chen