Epidemiology and mechanism of drug resistance of Mycoplasma pneumoniae in Beijing, China: A multicenter study oleh Dong-Xing Guo, Wen-Juan Hu, Ran Wei, Hong Wang, Bao-Ping Xu, Wei Zhou, Shao-Jie Ma, Hui Huang, Xuan-Guang Qin, Yue Jiang, Xiao-Pei Dong, Xiao-Yan Fu, Da-Wei Shi, Liang-Yu Wang, A-Dong Shen, De-Li Xin