Cardiology Department of the first affiliated hospital of SunYat-Sen University;
Medical Statistic and Epidemiology Department of the first affiliated hospital of SunYat-Sen University;
Pharmacology Department of the first affiliated hospital of SunYat-Sen University;
Chronic; heart; failure; B; -; type; natriuretic; peptide; (BNP); Prognosis; Quality; of; life(QOL);