Hi, I actually need to download pdfs through R code. The thing which I want to do is that, search for a paper in pubmed, which is possible by using GetPubMed function in the package "NCBI2R?". GetPubMed(searchterm, file = "", download = TRUE , showurl = FALSE, xldiv = ";", hyper = "HYPERLINK", MaxRet = 30000, sme = FALSE, smt = FALSE, quiet = TRUE, batchsize=500,descHead=FALSE) With this function I can not download the pdfs for all hits, although if I go to the pubmed, I can download it. So, the problem is not that, for each paper I have to download the pdfs (which are available if I go to the pubmed and search directly there) and the corresponding supplementary files. Could anybody please help me how I can solve this? Thanks, Nooshin