5ADDICOTT M A, YANG L L, PEIFFER A M, et al. The effect of daily caffeine use on cerebral blood flow: How much caffeine can we tolerate? [J]. Human Brain Mapping, 2009, 30 (10) : 3102 -3114.
6YOUNGBERG M R, KARPOV I O, BEGLEY A, et al. Clinical and physiological correlates of caffeine and caffe- ine metabolites in primary insomnia [ J ]. Journal of Clinical Sleep Medicine, 2011, 7 (2) : 196 -203.
7ALVI S N, HAMMAMI M M. Validated HPLC method for determination of caffeine level in human plasma using synthetic plasma: Application to bioavailability studies [J ]. Journal of Chromatographic Science, 2011 , 49 (4) : 292 - 296.
8FREDHOLM B B, BATTIG K, HOLMEN J, et al. Ac- tions of caffeine in the brain with special reference to fac- tors that contribute to its widespread use [ J ]. Pharmaco- logical Reviews, 1999, 51 (1): 83- 133.
9JURA Y H, TOWNSEND M K, CURHAN G C, et al. Caffeine intake, and the risk of stress, urgency and mixed urinary incontinence [ J ]. Journal of Urology, 2011, 185 (5): 1775-1780.
10LAUGHON S K, POWERS R W, ROBERTS J M, et al. Caffeine and insulin resistance in pregnancy [J]. Amer- ican Journal of Perinatology, 2011,28 (7) : 571 -578.
