Intensity of physical activity and risk of coronary heart disease

Janet H. Bates, Mary K. Serdula, Laura Kettel Khan, Deborah A. Jones, Caroline A. Macera, Barbara E. Ainsworth, Gerson T. Lesser, I. Min Lee, Kathryn M. Rexrode, Nancy R. Cook, Joann E. Manson, Julie E. Buring