A being breathing thoughtful breaths.
Campbell
E J
EJ
Division of Respirology, Department of Medicine, Faculty of Health Sciences, McMaster University, Hamilton, Ontario, Canada.
D049673:History, 20th Century; D006801:Humans; D012129:Respiratory Function Tests / Q000266:history / Q000295:instrumentation / Q000379:methods; D012143:Respiratory Physiological Phenomena