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Häkkinen L, Yli-Urpo A, Heino J, Larjava H.Häkkinen L, et al.J Biomed Mater Res. 1988 Nov;22(11):1043-59. doi: 10.1002/jbm.820221108.J Biomed Mater Res. 1988.PMID: 3241008