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Ramseier, CA; Christen, A; McGowan, J; McCarten, B; Minenna, L; Öhrn, K; Walter, C (2006). Tobacco use prevention and cessation in dental and dental hygiene undergraduate education. Oral health & preventive dentistry(4), 49- 60. Berlin: Quintessenz Verlags-GmbH 10.1922/IDJ_2535Davis13
