Key points are not available for this paper at this time.
Don P. Haefner, S. Stephen Kegeles, John Kirscht, Irwin M. Rosenstock, Preventive Actions in Dental Disease, Tuberculosis, and Cancer, Public Health Reports (1896-1970), Vol. 82, No. 5 (May, 1967), pp. 451-459
Haefner et al. (Sun,) studied this question.