Cerebral blood flow during orthostasis : role of arterial CO 2

J. M. Serrador, R. L. Hughson, J. M. Kowalchuk, R. L. Bondar, and A. W. Gelb Division on Aging, Harvard Medical School, Beth Israel Deaconess Medical Center, Boston, Massachusetts; Department of Kinesiology, University of Waterloo, Waterloo, Ontario, Canada; Canadian Centre for Activity and Aging, School of Kinesiology, and Department of Physiology and Pharmacology, University of Western Ontario, London, Ontario, Canada; Sunnybrook and Women’s Health Sciences Centre, Toronto, Ontario, Canada; and Department of Anaesthesia, University of California, San Francisco, San Francisco, California

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