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Martin CA, McNeil DW, Crout RJ, Ngan PW, Weyant RJ, Heady HR, Marazita ML.Martin CA, et al.J Am Dent Assoc. 2008 May;139(5):598-604; quiz 627. doi: 10.14219/jada.archive.2008.0221.J Am Dent Assoc. 2008.PMID: 18451377
Mahmoud A, Cortes D, Abaza A, Ammar H, Hazey M, Ngan P, Crout R, Mukdadi O.Mahmoud A, et al. Among authors: ngan p.IEEE Trans Ultrason Ferroelectr Freq Control. 2008;55(6):1316-27. doi: 10.1109/TUFFC.2008.794.IEEE Trans Ultrason Ferroelectr Freq Control. 2008.PMID: 18599419