Fig. 4
From: The trend of lead poisoning rate in Chinese population aged 0–18 years old: a meta-analysis
The temporal trend of lead poisoning rates among three economic zones in China main land
Fig. 4 | BMC Public Health
From: The trend of lead poisoning rate in Chinese population aged 0–18 years old: a meta-analysis
The temporal trend of lead poisoning rates among three economic zones in China main land