Filter Applied: doppler,transcranial,false negative (Click to remove)
Detection of Patent Foramen Ovale. Transesophageal Echocardiography and Transcranial Doppler Sonography With Ultrasound Contrast Media are "Supplementary, Not Competing, Diagnostic Methods"
Med Klin 94:367-370, Heckmann,J.G.,et al, 1999