Wittig E O, Marçallo F A, Pilotto R F, Mello L R
Arq Neuropsiquiatr. 1985 Sep;43(3):331-4. doi: 10.1590/s0004-282x1985000300016.
The authors report two cases of infantile metachromatic leucodystrophy in monozygotic female twins, born from a second cousin marriage (f = 1/32). The zygosity was determined by means of obstetrics and genetics marker findings.