R script to get Pubmed ID and Pubmed Central ID based on doi using 'rentrez' (E-Utilities)
Since I moved to the University of Ottawa, this project belongs to the IUPUI Center for Digital Scholarship. You can find an up-to-date script its Github: https://github.com/CenterforDigSchol/PMID_PMCID.
In the meantime, if you have any questions, please let me know. Thank you.