cleanup source region_df
cleanup source region_df

unicef/polio,SeedScientific/polio,SeedScientific/polio,unicef/polio,SeedScientific/polio,unicef/polio,unicef/rhizome,unicef/rhizome,unicef/rhizome,unicef/polio,SeedScientific/polio,SeedScientific/polio,unicef/rhizome