In its fifteenth year, the Training Program in Cancer Epidemiology is actually a multidisciplinary program involving faculty and trainees from three divisions of the School of Public Health - Epidemiology, Biosatatistics, and Environmental Health Sciences. There are ten trainees, half predoctoral and half postdoctoral, all engaged in cancer-related studies and research. Weekly seminars bring all the participants together for presentations by the trainees and the diversity of the group leads to much cross-fertilization and sharing of ideas. Research projects include studies in the classical and molecular epidemiology of lung cancer, liver cancer, breast cancer, colorectal cancer, and other GI tract cancers. Preventive and behavioral aspects of Oncology, as well as health services research, are also emphasized. Internationally renowned experts in nutritional and radiation epidemiology participate, and there are several international cohort and other studies in such locales as Chernobyl, Bangladesh, Taiwan, and the Netherlands. Emphasis is placed on learning clinical and pathologic principles of cancer, as well as an appreciation of advanced biostatistical methods.