Rolf Lehmann: Ökologie der Mundhöhle für Menschen. Thieme, 128p. DM 48.

8952 Samuel Shapiro/John Castellana/J. Michael Sprafka: Alcohol-containing
mouthwashes and oropharyngeal cancer. A spurious association due to
underascertainment of confounders? Am. J. Epidemiol. 144 (1996), 1091-1095.