共 37 条
[2]
BARLOW J, 1958, BRIT HEART J, V20, P162
[6]
BOURNE G, 1946, LANCET, V251, P779
[7]
Butterworth J.S., 1960, CARDIAC AUSCULTATION
[8]
CARTER BL, 1960, P SOC EXP BIOL MED, V104, P613
[9]
CASTLE RF, 1960, PEDIATRICS, V26, P511