Authors: Charles L Sprung; Simon L Cohen; Peter Sjokvist; Mario Baras; Hans-Henrik Bulow; Seppo Hovilehto; Didier Ledoux; Anne Lippert; Paulo Maia; Dermot Phelan; Wolfgang Schobersberger; Elisabet Wennberg; Tom Woodcock Journal: JAMA Date: 2003-08-13 Impact factor: 56.272