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. 2014 May 20;9(5):e97716. doi: 10.1371/journal.pone.0097716

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© 2014 Diraviyam et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Forest plot demonstrates the relative risk (RR) of individual studies included for meta-analysis under animal class poultry, 95% confidence interval. The diamond represents the global estimate and its 95% confidence interval. The cut off line crossing RR 1 differentiates the study favors IgY treatment group or control group. The line crossing diamond is to determine the number of studies positioned in global RR.