Nichols said she was working as a dialysis technician at a hospital in the 1980s when, seeing how kidney patients suffered, she decided she would someday help a kidney patient. In 2001, she anonymously donated a kidney -- without specifying a recipient because she didn't know anyone who needed one.
While organs are transplanted from people who died and from living donors such as spouses, parents and siblings, stranger-to-stranger donations are rare.
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