Two Canadian cities are doing an about face on their decision to remove flouride from drinking water after rates of tooth decay spiked, especially among children.
http://bit.ly/2MqYnJH
الخميس، 24 يناير 2019
Canadian cities re-think removal of fluoride from tap water
Canadian cities re-think removal of fluoride from tap water
http://bit.ly/2MqYnJH
http://bit.ly/2MqYnJH
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