deletions | additions       diff --git a/layout.md b/layout.md  index 1260df9..f7f1827 100644  --- a/layout.md  +++ b/layout.md 
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untitled.tex  section_Historical_background__.tex  section_Data_sources__.tex  section_Incidence__.tex  diff --git a/section_Data_sources__.tex b/section_Data_sources__.tex  deleted file mode 100644  index 202bf0b..0000000  --- a/section_Data_sources__.tex  +++ /dev/null 
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\section{Data sources}