RT Journal Article SR Electronic T1 Genetic linkage studies with neurofibromatosis: the question of heterogeneity. JF Journal of Medical Genetics JO J Med Genet FD BMJ Publishing Group Ltd SP 527 OP 529 DO 10.1136/jmg.24.9.527 VO 24 IS 9 A1 M A Spence A1 R S Sparkes A1 D M Parry A1 S J Bale A1 V Cortessis A1 J J Mulvihill YR 1987 UL http://jmg.bmj.com/content/24/9/527.abstract AB Three new families are reported for standard gene linkage markers and classical peripheral neurofibromatosis (Von Reckling-hausen disease). Additional data are summarised for the exclusion map. One family gives slight evidence of close linkage with the Gc locus on chromosome 4, raising again the question of possible genetic heterogeneity in NF.