LAUSR

Department of Respiration, The Second Affiliated Hospital of Guangdong Medical University, Zhanjiang, China; Graduate School, Guangdong Medical University, Zhanjiang, China; Pathological Diagnosis and Research Center, Affiliated Hospital, Guangdong Medical University, Zhanjiang, China; First Clinical School of Medicine, Guangdong Medical University, Zhanjiang, China Contributions: (I) Conception and design: Y Zeng, N Li, J Huang, J Cheng; (II) Administrative support: J Huang, J Cheng; (III) Provision of study materials or patients: Y Zeng, N Li, R Chen, W Liu, T Chen, J Zhu; (IV) Collection and assembly of data: Y Zeng, N Li, R Chen, W Liu, T Chen, J Zhu; (V) Data analysis and interpretation: Y Zeng, N Li, J Huang, J Cheng; (VI) Manuscript writing: All authors; (VII) Final approval of manuscript: All authors. These authors contributed equally to this work. Correspondence to: Jian Huang. Pathological Diagnosis and Research Center, Affiliated Hospital, Guangdong Medical University, 57 Renmin avenue South, Xiashan, Zhanjiang, China. Email: [email protected]; Junfen Cheng. Department of Respiration, The Second Affiliated Hospital of Guangdong Medical University, 12 Minyou Road, Xiashan, Zhanjiang, China. Email: [email protected].