Correlation of a Decline in Aerobic Capacity with Development of Emphysema in Patients with Chronic Obstructive Pulmonary Disease: A Prospective Observational Study

• Wakako Yamasawa,

  Affiliations Division of Pulmonary Medicine, Keio University School of Medicine, Tokyo, Japan, Department of Laboratory Medicine, Keio University School of Medicine, Tokyo, Japan

  ⨯
• Sadatomo Tasaka ,

  * E-mail: tasaka@cpnet.med.keio.ac.jp

  Affiliation Division of Pulmonary Medicine, Keio University School of Medicine, Tokyo, Japan

  ⨯
• Tomoko Betsuyaku,

  Affiliation Division of Pulmonary Medicine, Keio University School of Medicine, Tokyo, Japan

  ⨯
• Kazuhiro Yamaguchi

  Affiliation Comprehensive and Internal Medicine, Tokyo Women's Medical University Medical Center East, Tokyo, Japan

  ⨯