Midlife Cardiorespiratory Fitness, Incident Cancer, and Survival After Cancer in Men Carolyn E. Barlow, Jarett D. Berry, Laura F. DeFina, Pamela S. Douglas, Stephen W. Farrell, Ang Gao, Lee W. Jones, Susan G. Lakoski, David Leonard, Nina B. Radford, Benjamin L. Willis in JAMA Oncology Journal Article 1 fitness health