1. Biopharmaceutical Laboratory, Key Laboratory of Shandong Province Colleges and Universities, School of Life Science and Technology, Weifang Medical University, Weifang, Shandong 261053, P.R. China
2. Department of Respiratory and Critical Care Medicine, Translational Medical Center, Weifang Second People's Hospital, Weifang Respiratory Disease Hospital, Weifang, Shandong 261041, P.R. China