Since Lisa Colagrossi's death last year, her husband, Todd, has worked tirelessly and started a foundation to prevent similar tragedies.
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He spoke on the radio about the symptoms of an aneurysm.
A listener called her sister, Kris Sorenson, who was experiencing severe headaches.
It turns out Kris had an aneurysm and was treated.
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The sisters and Todd just met for the first time.
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