9Xiao-hong Wang1,Wen-feng Wang2 1.The Second Elderly Ward,Department of Cardiovascular Internal Medicine,the First Affiliated Hospital,Medical School of Xi’an Jiaotong University,Xi’an 710061,2.Class 2008 of Master’s Degree Program,Medical School of Xi’an Jiaotong University,Xi’an 710061,China.The clinical analysis of secondary hypertension patients[J].Journal of Pharmaceutical Analysis,2009,21(4):267-271.