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Comparative clinical trials and the changing marketplace for oral care: innovation, evidence and implications

Robert W Gerlach1, Aaron R Biesbrock

  • 1Health Care Research Center, The Procter & Gamble Company, Mason, OH 45040-9462, USA. gerlach.rw@pg.com

American Journal of Dentistry
|January 7, 2003
PubMed

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