1. Evidence-Based Medicine Working Group. Evidence-based medicine. A new approach to teaching the practice of medicine. JAMA. 1992 Nov 4;268(17):2420-2425.
2. Masic I, Miokovic M, Muhamedagic B. Evidence Based Medicine - New Approaches and Challenges. Acta Inform Med. 2008;16(4):219-225.
3. Andreeva NS, Rebrova OYu, Zorin NA, Avksentieva MV, Omelyanovskiy VV. Systems for assessing the reliability of scientific evidence and the credibility of recommendations: a comparative description and prospects for unification. Evaluation of medical technology. 2012; 4:10-24.
4. West S, King V, Carey TS, Lohr KN, McKoy N, Sutton SF, et al. Systems to Rate the Strength of Scientific Evidence: Summary [Internet]. Agency for Healthcare Research and Quality (US); 2002 [cited 2018 Aug 1]. Available from: https://www.ncbi.nlm.nih.gov/books/NBK11930/
5. OCEBM Levels of Evidence Working Group 'The Oxford 2011 Levels of Evidence' [Internet]. Oxford Centre for Evidence-Based Medicine.; Available from: http://www.cebm.net/index.aspx?o=5653