Avigayil is head of TED – the organization that arranges Technology Entertainment and Design talks.  But she contracted Leukemia and Israeli charity Ezer Mizion found her a rare bone marrow match.  But the donor changed his mind. Ezer Mizion then found another match who cancelled his holiday to donate.

http://www.ezermizion.org/blog/a-bone-marrow-registry-nightmare-he-said-no/