Last Updated: Wednesday, May 5, 2010 | 7:58 PM ET
CBC News
Canadians with multiple sclerosis rallied across the country Wednesday to demand access to a controversial procedure not available in Canada or covered by provincial health insurance policies.
The procedure, developed by Italian researcher Dr. Paolo Zamboni, involves angioplasty to help ease the flow in neck veins of blood from the brain to the heart. Zamboni believes narrowed or blocked veins force blood to move backwards or reflux back into the brain and spine, causing damage.