Bibliografia

1. Noordzij M, Hooft L, Dekker FW, Zoccali C, Jager KJ. Systematic reviews and meta-analyses: when they are useful and when to be careful. Kidney Int 2009; 76(11): 1130-6.

2. Muir Gray JA. Evidence based healthcare. How to make health policy and management decisions. London: Churchill Livingstone, 2001; 125-6.

3. Lang TA, Secic M. How to report statistics in medicine. Philadelphia: American College of Physicians, 1997.

4. Ioannidis JP. The value of meta-analysis in rheumatology research. Autoimmun 2004; (Suppl 1): S57-9.

5. Deeks JJ, Altman DG, Bradburn MJ. Statistical methods for examining heterogeneity and combining results from several studies in meta-analysis. In: Egger M, Smith GD, Altman DG, eds. Systematic reviews in healthcare: metaanalysis in context. London: BMJ Publishing Group, 2001; pp 285-312.

6. Lewis S, Clarke M. Forest plots: trying to see the wood and the trees. BMJ. 2001; 322(7300): 1479-80.

7. Wang XQ, Zheng JJ, Yu ZW et al. A meta-analysis of core stability exercise versus general exercise for chronic low back pain. PLoS One 2012; 7(12):e52082.

8. Egger M, Smith GD, Phillips AN. Meta-analysis: principles and procedures. BMJ 1997; 315(7121): 1533-7.