PM2.5 and COVID-19 systematic review

Contains 

R Project file
R code and extracted data for a meta-analysis on the effect of PM2.5 on COVID-19 outcomes including infection, severity, and death. 
R code and extracted data of literature search and screeniing, providing classifications for each hit including reasons for exclusion
Quality appraisal detailed report
PRISMA checklist
PRISMA abstract checklist
MOOSE checklist

NOTE: The recent update changes names in the forest plots to match the journal style.