This workshop is designed to accelerate the training of the next generation of cancer researchers who must be well-skilled in the integration of biology and epidemiology in studies of etiology and outcome. In addition to molecular epidemiologists, we invite applications from geneticists, statisticians, bioinformaticians, molecular biologists, and others. A requirement for the course is that participants must have successfully completed basic course work in epidemiology. Workshop lectures incorporate extensive time for discussion and interaction with top faculty members. Laboratories build on the information provided in the lectures with problem-solving sessions and hands-on applications. Both lectures and laboratories are designed for practical application and take into consideration issues such as feasibility, scalability, quality control, and practical limitations. The workshop incorporates a cross-disciplinary, team science approach that integrates discussions on working successfully within teams and consortia with experience working in collaborative groups throughout the workshop.