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The authors provide an excellent analysis of the public data, essentially confirming Van Pelt's findings of 12 years ago, but the question arises as to whether the two authors and six editors and reviewers involved in the genesis of this paper, 8 people in all, were concerned with the statistical details yet overlooked a fundamental fact of lung cancer. People with lung cancer commonly suffer shor...

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I probably overlooked this in the article, but areas of high elevation probably are sparsely populated, and this means less sampling. Less sampling means greater variance. This correlation could actually be due to the variance in the sampling. IE at some later year, we'd find that the regions of high elevation actually have increased rates of cancer. There are several known cases of reported c...

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Would humans exposed to multiple periods of exposure to an ambient and inspired ppO2 of 0.4ATA and higher, have a tendency to present with a higher incidence of lung cancer than the general population? Commercial divers are regularly saturated at a ppO2 of 0.4ATA for period of 720 hours (30 days). While locked out on a dive, the inspired ppO2 is typically increased to 0.5ATA for periods of 8 hou...

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