Acute Exacerbation of Chronic Obstructive Pulmonary Disease

• Montpellier University Hospital — Montpellier, Montepllier, France
• Centre hospitalier universitaire de Nimes — Nîmes, France
• Centre Hospitalier Universitaire de Poitiers — Poitiers, France

• Goztepe Prof Dr Suleyman Yalcin City Hospital — Istanbul, Turkey (Türkiye)

Not specified

• Sir Run Run Shaw Hospital Zhejiang University School of Medicine — Hangzhou, Zhejiang, China

• Tianjin Medical University General Hospital — Tianjin, Tianjin Municipality, China

• The First Affiliated Hospital of Henan University of Traditional Chinese Medicine — Zhengzhou, Henan, China

Not specified

• Beijing Chao Yang Hospital — Beijing, Beijing Municipality, China

Not specified

• Zhujiang Hospital,Southern Medical Universtiy — Guangzhou, Guangdong, China