Replace call to 'paste' with 'paste0'
Replace call to 'paste' with 'paste0'
Replace call to 'paste' with 'paste0'
Replace call to 'paste' with 'paste0'
Replace call to 'paste' with 'paste0'
Replace call to 'paste' with 'paste0'
Replace call to 'paste' with 'paste0'
Modify whitespace and indentation