deletions | additions       diff --git a/3 Materials and methods.tex b/3 Materials and methods.tex  index 2373ce9..1fcb1b1 100644  --- a/3 Materials and methods.tex  +++ b/3 Materials and methods.tex 
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Allowances made, if any, for controlling bias or unwanted sources of variability.  Limitations of the datasets.\item   Acronyms and abbreviations must be explained. explained  \end{itemize};