Authors: Kimford J Meador; Gus A Baker; Nancy Browning; Jill Clayton-Smith; Deborah T Combs-Cantrell; Morris Cohen; Laura A Kalayjian; Andres Kanner; Joyce D Liporace; Page B Pennell; Michael Privitera; David W Loring Journal: N Engl J Med Date: 2009-04-16 Impact factor: 91.245