1. Department of Respiratory and Critical Care Medicine, West China Hospital, Sichuan University, Chengdu, China
2. General Practice Department, The People’s Hospital of Leshan, Leshan, China
3. Department of Respiratory and Critical Care Medicine, First Affiliated Hospital of Kunming Medical University, Kunming, China
4. Department of Ultrasound Imaging, The People’s Hospital of Leshan, Leshan, China
5. Department of Pharmacy, First Affiliated Hospital of Kunming Medical University, Kunming, China