RT Journal Article SR Electronic T1 Independent NF1 mutations in two large families with spinal neurofibromatosis JF Journal of Medical Genetics JO J Med Genet FD BMJ Publishing Group Ltd SP 122 OP 126 DO 10.1136/jmg.40.2.122 VO 40 IS 2 A1 L Messiaen A1 V Riccardi A1 J Peltonen A1 O Maertens A1 T Callens A1 S L Karvonen A1 E-L Leisti A1 J Koivunen A1 I Vandenbroucke A1 K Stephens A1 M Pöyhönen YR 2003 UL http://jmg.bmj.com/content/40/2/122.abstract AB