Possible Potentiation of Toxins From <i>Prevotella intermedia</i>, <i>Prevotella nigrescens</i>, and <i>Porphyromonas gingivalis</i> by CotinineNicola M. Sayers, Anthony S. Blinkhorn, Jacqueline A. James et al.|Journal of Periodontology|1999Cited by 28