共 12 条
[2]
CHANDLER AB, 1958, LAB INVEST, V7, P110
[4]
MIKELL FL, 1987, AM J CARDIOL, V49, P1157
[8]
SHUNG KK, 1984, J CLIN ULTRASOUND, V12, P147
[10]
STRATTON JR, 1982, CIRCULATION, V66, P1