title: Grading evidence-based guidelines--what are the issues?
authors.affiliation: Tufts Medical Center, Tufts University School of Medicine, Boston, Massachusetts 02111, USA. kuhlig@tuftsmedicalcenter.org
authors.forename: Katrin
authors.initials: K
authors.lastname: Uhlig
authors.forename: Ethan M
authors.initials: EM
authors.lastname: Balk
authors.forename: Joseph
authors.initials: J
authors.lastname: Lau