Authors: Veronica Yank; C Vaughan Tuohy; Aaron C Logan; Dena M Bravata; Kristan Staudenmayer; Robin Eisenhut; Vandana Sundaram; Donal McMahon; Ingram Olkin; Kathryn M McDonald; Douglas K Owens; Randall S Stafford Journal: Ann Intern Med Date: 2011-04-19 Impact factor: 25.391