Author response.
Yvan
Y
Jamilloux
Antoine
A
Néel
Christiane
C
Broussolle
Mohamed
M
Hamidou
Pascal
P
Seve
D001921:Brain / Q000473:pathology*; D005260:Female; D006801:Humans; D007968:Leukoencephalopathy, Progressive Multifocal / Q000150:complications*; D008297:Male; D012507:Sarcoidosis / Q000150:complications*