Affiliations

• ¹ State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.
• ² Shenzhen Third People's Hospital, Shenzhen, China.
• ³ Guangzhou Eighth People's Hospital, Guangzhou, China.
• ⁴ State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China, lishiyue@188.com.