Three years follow-up observation and analysis of caries status of primary and permanent teeth among 652 6-yearold children in Sichuan Province
Tu Rui1,2, Zhong Yisi1, Li Xue1, Hu Deyu1, He Tao1
West China Journal of Stomatology . 2015, (1): 46 -49 .  DOI: 10.7518/hxkq.2015.01.010

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