Correction: Clinical characteristics and predictors of pulmonary hypertension in chronic obstructive pulmonary disease at different altitudes

Affiliations

• ¹ Department of Respiratory and Critical Care Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan, China.
• ² Department of Respiratory and Critical Care Medicine, Qinghai Provincial People's Hospital, Xining, China.
• ³ Laboratory of Pulmonary Immunology and Inflammation, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu, Sichuan, China.
• ⁴ Department of Respiratory and Critical Care Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan, China. fengmingluo@outlook.com.