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Bell E, Townsend G, Wilson D, Kieser J, Hughes T.Bell E, et al. Among authors: townsend g.Am J Hum Biol. 2001 Sep-Oct;13(5):690-8. doi: 10.1002/ajhb.1107.Am J Hum Biol. 2001.PMID: 11505477
Bell EJ, Kaidonis J, Townsend GC.Bell EJ, et al. Among authors: townsend gc.Aust Dent J. 2002 Mar;47(1):30-5. doi: 10.1111/j.1834-7819.2002.tb00300.x.Aust Dent J. 2002.PMID: 12035955Free article.