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Los Angeles rockers Haim say a chest infection has sidelined frontwoman Danielle Haim. 

The illness has forced the group to postpone Wednesday night's U.K. tour opener in Norwich. 

The sisters have pushed the canceled gig back to March, but they promise to be "back in full force" this Thursday for their show in Birmingham. 

Haim will be spending most of the next six months on the road supporting their debut album Days Are Gone.  Their first headlining North American tour is scheduled to start in April. 

Get well soon Danielle! 

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