TY - JOUR AU - Schroeder, H W; Oertel, J; Gaab, M R TI - Endoscopic treatment of cerebrospinal fluid pathway obstructions JO - Neurosurgery VL - 60 PY - 2007 L3 - PubMed-ID: 17297364 SP - ONS44 EP - ONS51 N1 - ; discussion ONS51-42 ER -