Below is a working bibliography of trusted health, pharmacovigilance, and legal-analysis sources, compiled for open research.
Understanding How Tysabri triggers Progressive Multifocal Leukoencephalopathy: pathophysiology
A focused review of background, context, and source material on this subject.
Reference: World Health Organization (WHO)
Authoritative source for clinical, regulatory, and public-health background reading.
Reference: European Medicines Agency (EMA)
Authoritative source for clinical, regulatory, and public-health background reading.