1[4]Cozzens J W,Chandler J P:Increased Risk of Distal Ventriculoperi toneal Shunt Obstruction Associated With Slit Valves or Distal Slits in the Peritoneal Catheter.J Neurosurg 1997,87:682-6
2[5]Boch A -L,Hermelin E,Sainte-Rose C,et al.:Mechanical Dysfunc tion of Ventriculoperitoneal Shunts Caused by Calcification of the Silicone Ruber Catheter.J Neurosurg 1998,88:975-82
3[6]Dan N G,Wade M J:The Incidence of Epilepsy After Ventricular Shunting Procedures.J Neurosurg 1986,65:19-21