Differing susceptibility of echocardiographic contrast agents to adverse effects of biologic factors: multicenter, videodensitometric comparison of octafluoropropane-filled microspheres with air-filled microspheres for left ventricular opacification. [electronic resource]
- Journal of the American Society of Echocardiography : official publication of the American Society of Echocardiography Nov 1999
- 957-66 p. digital