deletions | additions       diff --git a/layout.md b/layout.md  index a376d43..035e05c 100644  --- a/layout.md  +++ b/layout.md 
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Chapter_2_Introduction_and_Background__.md  Chapter_3_Review_of_the__.md  Chapter_4_Materials_and_Methods__.md  Chapter_5_Results_of_the__.md Chapter_6_Discussion_and_Conclusion__.md