Int J Quality in Health Care - A systematic review of appraisal tools for clinical practice guidelines

multiple similarities and one common deficit
International Journal for Quality in Health Care 2005 17(3):235-242
Joan Vlayen, Bert Aertgeerts, Karin Hannes, Walter Sermeus and Dirk Ramaekers

http://intqhc.oupjournals.org/cgi/content/abstract/17/3/235?etoc