Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleAviation Physiology.AuthorsGREENFIELD, A. D. M.PublicationNature, 1966, Vol 211, Issue 5055, p1235ISSN0028-0836Publication typeArticleDOI10.1038/2111235b0