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Table 1 Regular expressions used in BioKnol

From: Use of scientific social networking to improve the research strategies of PubMed readers

URL

Expression

ID type

Any web page

(?<=http://0-dx-doi-org.brum.beds.ac.uk/).{1,70}(?=</p >)

DOI

Pubmed.org

(?<=ncbi.nlm.nih.gov\/pubmed\/)\d{1,15})

PubMed ID

Nature.com

(?<=meta name=\”citation_doi\” content=\”doi:)(.|\\s)*?(?=\”>)

DOI