1Venture SJ,Peters KD,Martin JA,et ak Births and deaths:United States[J]. Mon Vital Stat Rep,1997,46(1):140-142.
2Pearson GD,Veille JC.Peripartum cardiomyopathy:National Heart,Lung,and Blood Institute and Office of Rare Disease (National Institutes of Health) workshop recommendations and review [J].JAMA,2000,283(9): 1183-1188.
