2Liu LS,Wang JG,Gong LS,et al.Comparison of active treatment and placebo in older Chinese patients with isolated systolic hypertension[J].J Hypertens,1998,16 (12):1823-1829.
3Staessen JA,Fagard R,Thijs L,et al.Randomised double-blind comparison of placebo and active treatment for older patients with isolated systolic hypertension.The Systolic Hypertension in Europe (Syst-Eur) Trial Investigators[J].Lancet,1997,350:757-764.