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Sue Tone/The Daily Courier
The Adler family wears Erdheim-Chester Disease T-shrits to help educate the public about the rare disease afflicting only 240 people worldwide. From left are Rich Adler, son Jeffrey, and Leslie Adler, who has ECD.

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Rare disease marks first awareness week Sept. 14-18

PRESCOTT VALLEY - Leslie Adler is one of three living Arizona patients with a rare disease of unknown cause called Erdheim-Chester Disease (ECD). To date, she is one of 144 people diagnosed in the United States, and one of only 241 in the world.