These include Afghanistan, Angola, Congo and Nigeria, which Dr Hill suggests produce health data that are, at best, inconclusive.
这些国家包括阿富汗，安哥拉，刚果和尼日利亚，这样得出的数据是完全无效的。
These include Afghanistan, Angola, Congo and Nigeria, which Dr Hill suggests produce health data that are, at best, inconclusive.
这些国家包括阿富汗，安哥拉，刚果和尼日利亚，这样得出的数据是完全无效的。
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