Association between nighttime sleep and napping in older adults.
Goldman SE, Hall M, Boudreau R, Matthews KA, Cauley JA, Ancoli-Israel S, Stone KL, Rubin SM, Satterfield S, Simonsick EM, Newman AB.
Goldman SE, et al. Among authors: stone kl.
Sleep. 2008 May;31(5):733-40. doi: 10.1093/sleep/31.5.733.
Sleep. 2008.
PMID: 18517043
Free PMC article.