Publisher: NEJM Group, a division of the Massachusetts Medical Society Country of Publication: United States NLM ID: 9918317485806676 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 2766-5526 (Electronic) Linking ISSN: 27665526 NLM ISO Abbreviation: NEJM Evid Subsets: PubMed not MEDLINE; MEDLINE
Publisher: BMJ Publishing Group Ltd Country of Publication: England NLM ID: 101552874 Publication Model: Electronic Cited Medium: Internet ISSN: 2044-6055 (Electronic) Linking ISSN: 20446055 NLM ISO Abbreviation: BMJ Open Subsets: MEDLINE