1. Conceptual and physiological basis of cardiopulmonary exercise testing measurement. In the ATS/ACCP statement on cardiopulmonary exercise testing;Johnson;Am J Resp Crit Care,2003
2. A design of an ultra-compact infrared gas sensor for respiratory quotient (qCO2) detection;Xu;Sensor. Actua. A-Phys.,2021
3. Checking the capnograph before anaesthesia: a survey of national practice in the UK;Gauthama;Euro. J. Anaesthesiol.| EJA,2006
4. The vexatious vital: neither clinical measurements by nurses nor an electronic monitor provides accurate measurements of respiratory rate in triage;Lovett;Ann. Emerg. Med.,2005
5. D. Sankar, K.J. Kini, Respiratory monitoring of non-intubated patients using the'PIPPA'breathing monitor, Brit. J. Anaesth. Vol. 89. No. 4. GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND: OXFORD UNIV PRESS, 2002.