aher CO Sencakova D. Spontaneous CSF leaks: underlying disorder of connective 20 tissue. Neurology 2002. 58:814. 21 Ferrante E Citterio A Savino A Santalucia P. Postural headache in a patient with Marfan's syndrome. Cephalalgia 2003; 23:552. 22 Schrijver I Schievink WI Godfrey M et al. Spontaneous spinal cerebro