Students learn about oral hygiene ahead of national day for dental care
chinadaily.com.cn/Xinhua |
Updated: 2017-09-20 09:21
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| A medical staff member from Xuanhua district hospital examines the teeth of students in Houjiamiao central primary school in Zhangjiakou, North China's Hebei province, Sept 18, 2017. [Photo/Asianewsphoto] |
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