[R] Help with package EasyPubmed

[David Winsemius]

> On Aug 3, 2021, at 11:20 AM, bharat rawlley via R-help <r-help using r-project.org> wrote:
> 
> Hello, 
> When I try to run the following code using the package Easypubmed, I get a null result - 
>> batch_pubmed_download(query_7)
> NULL
> #query_7 <- "Cardiology AND randomizedcontrolledtrial[Filter] AND 2011[PDAT]"
> However, the exact same search string yields 668 results on Pubmed. 

Did you try with: 
'Cardiology AND "randomized controlled trial"[Filter] AND 2011[PDAT]'

DAVID.

> 
> 
> I am unable to figure out why this is happening. If I use the search string "Cardiology AND 2011[PDAT]" then it works just fine. 
> Any help would be greatly appreciated
> Thank you! 
> 
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