The association between sleep duration and obesity in older adults.
Patel SR, Blackwell T, Redline S, Ancoli-Israel S, Cauley JA, Hillier TA, Lewis CE, Orwoll ES, Stefanick ML, Taylor BC, et al. Int J Obes (Lond). 2008 Dec; 32(12):1825-34. Epub 2008 Oct 21.