Wolpin, B. M., J. A. Meyerhardt, A. T. Chan, K. Ng, J. A. Chan, K. Wu, M. N. Pollak, E. L. Giovannucci, and C. S. Fuchs. 2009. Insulin, the insulin-like growth factor axis, and mortality in patients with nonmetastatic colorectal cancer. J Clin Oncol 27(2):176-185.
World Cancer Reasearch Fund and American Institute for Cancer Research. 2007. Food, nutrition, physical activity, and the prevention of cancer: A global perspective. http://www.dietandcancerreport.org/cancer_resource_center/downloads/summary/english.pdf (accessed January 9, 2012).
Wright, M. E., S. C. Chang, A. Schatzkin, D. Albanes, V. Kipnis, T. Mouw, P. Hurwitz, A. Hollenbeck, and M. F. Leitzmann. 2007. Prospective study of adiposity and weight change in relation to prostate cancer incidence and mortality. Cancer 109(4):675-684.
Zheng, Q., S. M. Dunlap, J. Zhu, E. Downs-Kelly, J. Rich, S. D. Hursting, N. A. Berger, and O. Reizes. 2011. Leptin deficiency suppresses MMTV-Wnt-1 mammary tumor growth in obese mice and abrogates tumor initiating cell survival. Endocr Relat Cancer 18(4):491-503.