aDepartment of Emergency, the First Affiliated Hospital of Guangxi Medical University

bDepartment of Respiratory Medicine, Institute of Respiratory Disease, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China

Received 22 July 2022 Revised form accepted 22 July 2022

Correspondence to Quan-Fang Chen, MD, Department of Respiratory Medicine, Institute of Respiratory Disease, The First Affiliated Hospital Guangxi Medical University, No. 6, Shuangyong Road, Nanning 530021, China, Tel: +86 0771 5359339; e-mail: [email protected]