The quality of clinical practice guidelines over the last two decades: a systematic review of guideline appraisal studies
Pablo Alonso-Coello, Affan Irfan, Ivan Solà, Ignasi Gich, Mario Delgado-Noguera, David Rigau, Sera Tort, Xavier Bonfill, Jako Burgers, Holger Schunemann
Quality and Safety in Health Care Dec 2010, 19 (6) e58; DOI: 10.1136/qshc.2010.042077
