RT Journal Article SR Electronic T1 Predictive testing for cognitive functioning in female carriers of the fragile X syndrome using hair root analysis JF Journal of Medical Genetics JO J Med Genet FD BMJ Publishing Group Ltd SP 377 OP 379 DO 10.1136/jmg.40.5.377 VO 40 IS 5 A1 Willemsen, R A1 Smits, A A1 Severijnen, L-A A1 Jansen, M A1 Jacobs, A A1 De Bruyn, E A1 Oostra, B YR 2003 UL http://jmg.bmj.com/content/40/5/377.abstract AB