Students learn about oral hygiene ahead of national day for dental care
chinadaily.com.cn/Xinhua | 2017-09-20 09:21
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A medical staff member gives knowledge about teeth to students in Taolin county central primary school in Donghai village, East China's Jiangsu province, Sept 18, 2017. [Photo by Zhang Zhengyou/Asianewsphoto]
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