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Meng, Y; Zhang, HQ; Pan, F; He, ZD; Shao, JL; Ding, Y (2011). «Prevalence of dental caries and tooth wear in a Neolithic population (6700-5600 years BP) from northern China». Archives of Oral Biology. 56 (11): 1424–35. PMID21592462. doi:10.1016/j.archoralbio.2011.04.003.