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The American Journal of Obstetrics and Gynecology (AJOG) is a peer reviewed journal of obstetrics and gynecology. It is popularly called the "Gray Journal". Since 1920, AJOG has continued the American Journal of Obstetrics and Diseases of Women and Children, which began publishing in 1868. AJOG has been Medline-indexed since 1965. The current ...
WHOIS in the Field of Grey Literature is a compilation of over 350 biographical notes provided by authors in the International Conference Series on Grey Literature and The Grey Journal. This online resource is maintained by TextRelease, the Program and Conference Bureau.
The term grey literature acts as a collective noun to refer to a large number of publications types produced by organizations for various reasons. These include research and project reports, annual or activity reports, theses, conference proceedings, preprints, working papers, newsletters, technical reports, recommendations and technical standards, patents, technical notes, data and statistics ...
Scientific, technical, and medical (STM) literature is a large industry which generated $23.5 billion in revenue in 2011; $9.4 billion of that was specifically from the publication of English-language scholarly journals. [47]
It is popularly known as the "Green Journal". [1] Obstetrics & Gynecology has approximately 45,000 subscribers. [1] According to the 2014 Journal Citation Reports, it had an impact factor of 4.982, ranking it 5th among 82 reproductive medicine journals. [1]
The precise role this organism plays in causing disease remains speculative. [4] Diagnosis remains a challenge because the organism is difficult to culture in vitro. PCR-based techniques are still rare outside research scenarios. [5] The following conditions have been linked to Mycoplasma hominis: [citation needed]
The "System for Information on Grey Literature in Europe" (SIGLE) was established in 1980, two years after a seminar on grey literature organised by the European Commission in York, England. Operated by a network of national information or document supply centres active in collecting and promoting grey literature, SIGLE was an online, pan ...
Histopathology of placenta with increased syncytial knotting of chorionic villi, with two knots pointed out. The following characteristics of placentas have been said to be associated with placental insufficiency, however all of them occur in normal healthy placentas and full term healthy births, so none of them can be used to accurately diagnose placental insufficiency: [citation needed]