Type of articles are based on PubMed defenitions. For more info please refer to: http://dtd.nlm.nih.gov/publishing/tag-library/3.0/n-w2d0.html
| Abstract | The article itself is an abstract (of a paper or presentation) that usually has been presented or published separately. |
| Announcement | Material announced in the publication (may or may not be directly related to the publication) |
| Article Commentary | A work whose subject or focus is another article or articles; this article comments on the other article(s). (This value would be used when the editors of a publication invite an author with an opposing opinion to comment on a controversial article, and then publish the two together. The somewhat similar value “editorial” is reserved for commentary written by an editor or other publication staff.) |
| Book Review | Review or analysis of one or more printed or online books (The similar value “product-review” is used for product analyses.) |
| Books Received | Notification that items, e.g., books or other works, have been received by a publication for review or other consideration |
| Brief Report | A short and/or rapid announcement of research results |
| Calendar | A list of events |
| Case Report | Case study, case report, or other description of a case |
| Collection | Wrapper article for a series of sub-articles or responses; this value’s usage is restricted to articles whose intellectual content appears primarily in sub-article or response. |
| Discussion | Invited discussion related to a specific article or issue |
| Dissertation | Thesis or dissertation written as part of the completion of a degree of study |
| Editorial | Opinion piece, policy statement, or general commentary, typically written by staff of the publication (The similar value “article-commentary” is reserved for a commentary on a specific article or articles, which is written by an author with a contrasting position, not an editor or other publication staff.) |
| In Brief | Summary or teaser of items in the current issue |
| Introduction | An introduction to a publication, or to a series of articles within a publication, etc., typically for a special section or issue |
| Letter | Letter to a publication, typically commenting upon a published work |
| Meeting Report | Report of a conference, symposium, or meeting |
| News | News item, normally current but atypically historical |
| Obituary | Announcement of a death, or the appreciation for a colleague who has recently died |
| Oration | Reprint of a speech or oral presentation |
| Partial Retraction | Retraction or disavowal of part(s) of previously published material |
| Product Review | Description, analysis, or review of a product or service, for example, a software package (The similar value “book-review” is used for analyses of books.) |
| Rapid Communication | Fast-breaking research update or other news item |
| Reply | Reply to a letter or commentary, typically by the original author commenting upon the comments |
| Reprint | Reprint of a previously published article |
| Research Article | Article reporting on primary research (The related value “review-article” describes a literature review, research summary, or state-of-the-art article.) Clinical trials is categorised in this group. |
| Retraction | Retraction or disavowal of previously published material |
| Review Article | Review or state-of-the-art summary article (The related value “research-article” describes original research.) Systematic review or Meta analysis is categorised in this type. |
| Translation | Translation of an article originally produced in a different language |
| Methods Article | Study protocol articles can be for proposed or ongoing prospective clinical research, and should provide a detailed account of the hypothesis, rationale and methodology of the study. |
| Corrections | A modification or correction of previously published material; this is sometimes called “errata”. Click here |
