Patent Foramen Ovale and Transcranial Doppler:Comparison of Different ProceduresStroke 27:2251-2255, Zanette,E.M.,et al, 1996
Transient Cerebral Circulatory Arrest Coincides with Fainting in Cough SyncopeNeurol 45:498-501, Mattle,H.P.,et al, 1995