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  • Original Research May 15, 2012

    Brett Ley, MD; Christopher J. Ryerson, MD, MAS; Eric Vittinghoff, PhD; Jay H. Ryu, MD; Sara Tomassetti, MD; Joyce S. Lee, MD, MAS; Venerino Poletti, MD; Matteo Buccioli, BS; Brett M. Elicker, MD; Kirk D. Jones, MD; Talmadge E. King, MD; Harold R. Collard, MD

    Ann Intern Med. 2012; 156(10):684-691. doi: 10.7326/0003-4819-156-10-201205150-00004