[1] Stanford Univ, Div Cardiovasc Med, Stanford, CA 94305 USA
[2] Stanford Univ, Dept Elect Engn, Stanford, CA 94305 USA
[3] Stanford Univ, Stanford Cardiovasc Inst, Stanford, CA 94305 USA
[4] Eagle Vis Pharmaceut Corp, Downingtown, PA USA
[5] Biocardia Inc, San Carlos, CA USA