This page collects vetted references on medical safety, regulatory guidance, and clinical background for anyone researching this topic.
Scientific evidence connecting Tysabri to Progressive Multifocal Leukoencephalopathy — Research Summary — detailed background and analysis.
Reference: European Medicines Agency (EMA)
Authoritative source for clinical, regulatory, and public-health background reading.
Reference: Wikipedia: Medical Malpractice
Authoritative source for clinical, regulatory, and public-health background reading.
Reference: Centers for Disease Control and Prevention (CDC)
Authoritative source for clinical, regulatory, and public-health background reading.