Below is a working bibliography of trusted health, pharmacovigilance, and legal-analysis sources, compiled for open research.
Scientific evidence connecting Tysabri to Progressive Multifocal Leukoencephalopathy Resource Guide
A focused look at the background, context, and key sources on this subject.
Reference: ClinicalTrials.gov
Authoritative source for clinical, regulatory, and public-health background reading.
Reference: Mayo Clinic — Diseases & Conditions
Authoritative source for clinical, regulatory, and public-health background reading.
Reference: MedlinePlus — Trusted Health Information
Authoritative source for clinical, regulatory, and public-health background reading.