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1 From the Perelman School of Medicine at the University of Pennsylvania, Philadelphia (E.A., J.T.); Boston Medical Center (C.M.C.) and Massachusetts General Hospital (M.F., S.S.-V.) - both in Boston; and Yale School of Medicine, New Haven, CT (S.N., G.S.).
1 From the Perelman School of Medicine at the University of Pennsylvania, Philadelphia (E.A., J.T.); Boston Medical Center (C.M.C.) and Massachusetts General Hospital (M.F., S.S.-V.) - both in Boston; and Yale School of Medicine, New Haven, CT (S.N., G.S.).