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About the Journal

Obstetrics & Gynecology is the official publication of the American College of Obstetricians and Gynecologists (ACOG). Popularly known as "The Green Journal," Obstetrics & Gynecology has been published since 1953. Then as is now, the goal of the journal is to promote excellence in the clinical practice of obstetrics and gynecology and closely related fields. To do so, the journal publishes articles on a variety of translational and clinical topics.

Obstetrics & Gynecology reaches over 45,000 members and non-member subscribers.

Impact Factor
Obstetrics & Gynecology's 2019 impact factor is 5.524. The journal's ranking is the sixth highest impact factor out of all 82 obstetrics and gynecology journals.


Most content in Obstetrics & Gynecology will be published online 2 weeks ahead of the print mail date. Items that are generally not published ahead-of-print include corrections/errata, letters to the editor, and official ACOG documents (eg, Practice Bulletins).

All material published ahead-of-print is embargoed until 5:00 PM ET on the date listed below:

January 2020 issue: December 5, 2019
February 2020 issue: January 9, 2020
March 2020 issue: February 6, 2020
April 2020 issue: March 12, 2020
May 2020 issue: April 9, 2020
June 2020 issue: May 7, 2020
July 2020 issue: June 11, 2020
August 2020 issue: July 9, 2020
September 2020 issue: August 6, 2020
October 2020 issue: September 10, 2020
November 2020 issue: October 8, 2020
December 2020 issue: November 5, 2020

In general, corrections/errata, letters to the editor, and official ACOG documents are embargoed until 5:00 PM ET on the date listed below:

January 2020 issue: December 19, 2019
February 2020 issue: January 23, 2020
March 2020 issue: February 20, 2020
April 2020 issue: March 26, 2020
May 2020 issue: April 23, 2020
June 2020 issue: May 21, 2020
July 2020 issue: June 25, 2020
August 2020 issue: July 23, 2020
September 2020 issue: August 20, 2020
October 2020 issue: September 24, 2020
November 2020 issue: October 22, 2020
December 2020 issue: November 19, 2020

The embargo is rigidly enforced. ACOG staff may not release or discuss with outside parties any upcoming studies or ACOG documents prior to the embargo. This includes verification that said documents indeed are being released. This policy applies to members of the media, study authors, public information officers at universities and other institutions, and all others with access to articles published in Obstetrics & Gynecology.

Representatives of the press may request further information about Obstetrics & Gynecology articles by contacting ACOG's Communications Department at

About the Publisher
Obstetrics & Gynecology is published for the American College of Obstetricians and Gynecologists by Wolters Kluwer Health, an international provider of quality information in all media for physicians and other health care professionals in training and in practice. For information about their products, visit the Wolters Kluwer Online Store at

Obstetrics & Gynecology participates in the Health InterNetwork Access to Research Initiative (HINARI). Academic, research, and government institutions in qualifying countries may obtain information at