Stroke Links
http://www.ninds.nih.gov/disorders/stroke/knowstroke.htm
http://www.ninds.nih.gov/disorders/stroke/stroke.htm
http://www.ninds.nih.gov/disorders/stroke/stroke_bookmark.htm
http://www.strokeassociation.org/presenter.jhtml?identifier=1200037
http://www.stroke.org/site/PageServer?pagename=HOME

Migraine Links
http://www.ninds.nih.gov/disorders/headache/detail_headache.htm
http://www.migrainetrust.org/

PFO Links
http://www.clevelandclinic.org/health/health-info/docs/3400/3454.asp?index=11626
http://www.clevelandclinic.org/health/health-info/docs/3400/3455.asp?index=11627

General Links
http://www.nhlbi.nih.gov/
http://www.americanheart.org/presenter.jhtml?identifier=1200000