Reply to Friedrich et al

• Ming-Cheng Chan,
• Jeng-Yuan Hsu,
• Hsiu-Hwa Liu,
• Yao-Ling Lee,
• Su-Chen Pong,
• Li-Yin Chang,
• Benjamin Ing-Tiau Kuo,
• Chieh-Liang Wu

Affiliations

Ming-Cheng Chan

Division of Chest Medicine, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung, Taiwan

Jeng-Yuan Hsu

Division of Chest Medicine, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung, Taiwan

Hsiu-Hwa Liu

Department of Nursing, Taichung Veterans General Hospital, Taichung, Taiwan

Yao-Ling Lee

Division of Critical Care and Respiratory Therapy, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung, Taiwan

Su-Chen Pong

Central Taiwan University of Science and Technology, Taichung, Taiwan

Li-Yin Chang

Central Taiwan University of Science and Technology, Taichung, Taiwan

Benjamin Ing-Tiau Kuo

Laboratory of Epidemiology and Biostatistics, Taipei Veterans General Hospital, Taipei, Taiwan

Chieh-Liang Wu

Division of Critical Care and Respiratory Therapy, Department of Internal Medicine, Chung Shan Medical University, Taichung, Taiwan