Hello David
They must have missed the "family of four" example in the original post, and me offering up two adults and two children as cohorts.
Have had emails of guinea-pig offers already (that's people not actual guinea pigs).
Plus, why should adults not be of use? We use plenty of adult data and extrapolate to child expsoures. Plus, we are looking for any evidence of potential correlations (or lack of correlations). Don't see why adult data shouldn't be useful.
Chris Dainton
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