Quick-thinking good Samaritans, including a union plumber and celebrity doctor Mehmet Oz, helped save the life of a British tourist whose leg was severed by a runaway taxi in midtown Manhattan.

Taxi that jumped the curb and severed the leg of a pedestrian
Taxi that jumped the curb and severed the leg of a pedestrian in Rockefeller Plaza (WNBC TV via Facebook)
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The 23-year-old victim, Sian Green, was struck in Rockefeller Center on Tuesday.

David Justino fashioned a tourniquet with his plumber's belt for one of Green's legs. He used a dog leash for the other injured leg.

TV's "Dr. Oz," who was walking in the area, rushed over when he heard the accident. He credited Justino for saving the woman's life.

A nearby food truck owner, Max Crespo, said he placed her severed limb in a bucket of ice.

Police say the cab driver was issued a summons for being an unauthorized driver. The circumstances of the accident are under investigation.

(Copyright 2013 The Associated Press. All Rights Reserved)

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