Authors: Susan H Ehringhaus; Joel S Weissman; Jacqueline L Sears; Susan Dorr Goold; Sandra Feibelmann; Eric G Campbell Journal: JAMA Date: 2008-02-13 Impact factor: 56.272
Authors: Erick H Turner; Annette M Matthews; Eftihia Linardatos; Robert A Tell; Robert Rosenthal Journal: N Engl J Med Date: 2008-01-17 Impact factor: 91.245