Recent Insights into the Measurement of Carbon Dioxide Concentrations for Clinical Practice in Respiratory Medicine. - Akira Umeda; Masahiro Ishizaka; Akane Ikeda; Kazuya Miyagawa; Atsumi Mochida; Hiroshi Takeda; Kotaro Takeda; Isato Fukushi; Yasumasa Okada; David Gozal (Sensors, 2021)