3Guidelines subcommittee 1999 World Health Organization.International Society of Hypertension Guide lines for the management of Hypertension.Hypertension 1999;17:151- 83
4Mendes,Ribein AC,Brunini TM,et al.Abnormalities in L-arginine transport and nitric oxide biosynthesis in chronic renal and heart failure.Cardiovas Res 2001;(4):697- 712