Genetic homogeneity of Pelizaeus-Merzbacher disease: Tight linkage to the proteolipoprotein locus in 16 affected families. - Boespflug-Tanguy,O.; Mimault,C.; Melki,J.; Cavagna,A.; Giraud,G.; Pham Din and the clinical Group,D.PMD. (Am J Hum Genet, 1994)