Jepson C, Kessler LG, Portnoy B, Gibbs T. Black-white differences in cancer prevention knowledge and behavior. Am J Public Health. 1991 Apr;81(4):501-4.
Jepson C, Kessler LG, Portnoy B, Gibbs T. Black-white differences in cancer prevention knowledge and behavior. Am J Public Health. 1991 Apr;81(4):501-4.