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Wang Y, Barker K, Shi S, Diaz M, Mo B, Gutstein HB.Wang Y, et al.Nat Med. 2012 Feb 19;18(3):385-7. doi: 10.1038/nm.2633.Nat Med. 2012.PMID: 22344297Free PMC article.
Barker KE, Savage NW.Barker KE, et al.Aust Dent J. 2005 Dec;50(4):220-3; quiz 288. doi: 10.1111/j.1834-7819.2005.tb00363.x.Aust Dent J. 2005.PMID: 17016885Free article.Review.