Guyatt, G. H., Oxman, A. D., Vist, G. E., Kunz, R., Falck-Ytter, Y., Alonso-Coello, P., & Schünemann, H. J. (2008). GRADE: An emerging consensus on rating quality of evidence and strength of recommendations. BMJ Publishing Group Ltd.

Guyatt, Gordon H., Andrew D. Oxman, Gunn E. Vist, Regina Kunz, Yngve Falck-Ytter, Pablo Alonso-Coello, und Holger J. Schünemann. GRADE: An Emerging Consensus On Rating Quality of Evidence and Strength of Recommendations. BMJ Publishing Group Ltd, 2008.

Guyatt, Gordon H., et al. GRADE: An Emerging Consensus On Rating Quality of Evidence and Strength of Recommendations. BMJ Publishing Group Ltd, 2008.