Minami, Seigo, Suguru Yamamoto, Yoshitaka Ogata, Takeshi Nakatani, Yoshiko Takeuchi, Masanari Hamaguchi, Taro Koba, and Kiyoshi Komuta. “Ambulatory Pulse Oximetry Monitoring in Japanese COPD Outpatients Not Receiving Oxygen Therapy”. Multidisciplinary Respiratory Medicine 9, no. 1 (April 11, 2014). Accessed July 7, 2024. https://mrmjournal.org/index.php/mrm/article/view/410.