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...reading the fulltext now. They were selected from among middle-aged civil servants in London in the late 80s/early 90s so the sample is way more homogeneous
by stakhanov 8y ago
...reading the fulltext now. They were selected from among middle-aged civil servants in London in the late 80s/early 90s so the sample is way more homogeneous than the total population, certainly if the U.S. is what you're thinking of.
- safanycom 8y agoIn London... Polluted London, Leaded car fuel London