PMID (PubMed ID) is the unique identifier for a publication's abstract in PubMed.
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PubMed and PubMed Central, produced by the U.S. National Library of Medicine, are text archives of biomedical and life sciences literature.
A DOI (Digital Object Identifier) is a publisher’s unique identifier for a publication. The prefix http://dx.doi.org/ is presumed. Publishers may charge for access.
Marcelo A, Gavino A, Isip-Tan IT, Apostol-Nicodemus L, Mesa-Gaerlan FJ, Firaza PN, Faustorilla JF Jr., Callaghan FM, Fontelo P.A comparison of the accuracy of clinical decisions based on full-text articles and on journal abstracts alone: a study among residents in a tertiary care hospital. Evid Based Med. 2013 Apr;18(2):48-53. doi: 10.1136/eb-2012-100537. Epub 2012 Jul 10.
Zou J, Antani SK, Thoma G.Unified Deep Neural Network for Segmentation and Labeling of Multi-Panel Biomedical Figures Journal of the Association for Information Science and Technology (JASIST), 2019