Screening for tumours in paraneoplastic syndromes: report of an EFNS Task Force
Eur J Neurol 18:19-27, Titulaer, M.J.,et al, 2011
Transcranial Doppler Ultrasound Identifies patients with Right-to-Left Cardiac or Pulmonary Shunts
Neurol 41:1902-1904, Chimowitz,M.I.,et al, 1991