title: Methodological remarks on transcranial Doppler ultrasonography for PFO detection.
authors.forename: J
authors.initials: J
authors.lastname: Kampen
authors.forename: A
authors.initials: A
authors.lastname: Koch
authors.forename: N
authors.initials: N
authors.lastname: Struck
mesh_terms: D006344:Heart Septal Defects, Atrial / Q000000981:diagnostic imaging*; D006801:Humans; D017585:Ultrasonography, Doppler, Transcranial / Q000379:methods*