7Gomez_Angelats E, de la Sierra A, Sierra C, et al. Blood pressure variability and silent cerebral damage in essential hypcrtension[J].Am J Hypertens, 2004,17 (7) : 696 - 700.
8Pringle E, Phillips C, Thijs L, et al. Systolic blood pressure varia- bility as a risk factor for stroke and cardiovascular mortality in the elderly hypertensive population [J]. J Hypertens, 2003, 21 (12) : 2251-2257.