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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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