Summary: normal men Am J Physiol 1945 143 594 608 four out of seventeen healthy subjects at a simulated altitude of 4725 meters 15 500 collapsed when their COHb reached between 9 19 Predicted COHb and O2Hb saturation in regards to altitude calculated from oxygen blood saturation findings of 11male and 2 female acclimated conditioned mountain climbers by Tannheimer M
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