8[1]Celermajer DS,Sorensen KE,Gooch VM,et al.Non-invasive detection of endothelial dysfunction in children and adults at risk of atherosclerosis.Lancet,1992,340:1111~1115
9[2]Chauveau M,Levy B,Dessanges JF,et al.Quantitative Doppler blood flow measurement method and in vivo calibration.Cardiovascular Res,1985,19:700~706