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The largest non-government funder of breast cancer research is canceling walks in seven U.S. cities next year, including Chicago.

‘Susan G. Komen for the Cure’ says participation for its three-day walks dropped 37-percent in the past four years.

As a result, its cutting walks for 2014 in Chicago, Phoenix, Boston, Cleveland, Tampa Bay, San Francisco and Washington.

The event will continue in seven other places.

This year’s Chicago three-day walk begins on August 9.