Corrections and clarifications of work published on post-gazette.com can be found posted to the bottom of the stories. The text of those corrections and clarifications will also be displayed here for several days for reader convenience.

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Correction published 5/18/2012: Page One: Stephen A. Zappala Jr. is Allegheny County district attorney. A photo caption Thursday contained a wrong first name.

Correction published 5/18/2012: Page One: The federal wind production tax credit is 2.2 cents per kilowatt hour and the total subsidy for 2011 was $2.63 billion. The rate mentioned in a story Wednesday was outdated.

Correction published 5/18/2012: Page One: Army Spc. Leslie H. Sabo Jr. served in the 101st Airborne Division during the Vietnam War. A story Thursday about a Medal of Honor presentation listed an incorrect Army division.

Correction published 5/18/2012: Business: Uncompensated care in Pennsylvania hospitals rose to $990 million in the last fiscal year ending June 30. An incorrect amount appeared in a story Thursday.

Correction published 5/17/2012: North Xtra: Vince Kuzniewski is a Hampton High School wood shop teacher. His last name was misspelled May 3.

Correction published 5/17/2012: North Xtra: Dave Interthal coaches the girls track team at Shaler Area High School. His last name was misspelled last Thursday in a story about the team.

Correction published 5/17/2012: Sports: Justin Dattilo drove in the winning run for the North Allegheny High School baseball team in its WPIAL Class AAAA first-round playoff victory against Gateway on Tuesday. A report in Wednesday's editions credited another player.

Correction published 5/17/2012: Section: A story in Wednesday's editions incorrectly stated how former coach Bill Cowher left the Steelers. He resigned his position after the 2006 season