Clinical Characteristics and Economic Burden of Asthma in China: A Multicenter Retrospective Study - Shang, Bin; Li, Xiangguo; Xu, Yu; Ren, Wenxin; Wang, Junren; Xing, Chunyan; Jiang, Shujuan; Sun, Jian (Iranian Journal of Allergy, Asthma and Immunology, 2023)