Fw: Radon Health Risks

["field" <bill-field@UIOWA.EDU>]

Kai, 



Sorry, I forarded his message without adding my comments.  Could you

provide more documentation of when and where only 1 test was performed to

document exposure to a large cohort of miners?  Bill Field





 Kai,



 If  there are problems you think should be documented than you should

write a letter to the editor as soon as the article is published.  In most

cases, I do believe more than one measurement was performed.



 Nonetheless, I personally prefer the case-control residential studies - no

 extrapolation and more control of confounding.



 Don





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