[Statistical study of the distribution of etiologic frequency of the first thousand cases observed in the cardiology outpatient department of the Policlänica geral do Rio de Janeiro].
VILLELA
A A
AA
CARNEIRO LEAO
T A
TA
STRUNCK
G
G
BARON PLATA
L C
LC
D006331:Heart Diseases; D006801:Humans; D010045:Outpatients