C. A. 4th Cir. Petition for rehearing granted. Order entered June 29, 2012 [567 U. S. 951], denying petition for writ of certiorari vacated. Certiorari granted, judgment vacated, and case remanded for further consideration in light of National Federation of Independent Business v. Sebelius, 567 U. S. 519 (2012).
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