Modifying the Yuzpe Regimen of Emergency Contraception: A Multicenter Randomized Controlled Trial

Ellertson, Charlotte; Webb, Anne; Blanchard, Kelly; More

Obstetrics & Gynecology . 101(6):1160-1167, June 2003.

Extending the Time Limit for Starting the Yuzpe Regimen of Emergency Contraception to 120 Hours

Ellertson, Charlotte; Evans, Margaret; Ferden, Sue; More

Obstetrics & Gynecology . 101(6):1168-1171, June 2003.

Emergency Contraception: Randomized Comparison of Advance Provision and Information Only

Ellertson, Charlotte; Ambardekar, Shubba; Hedley, Allison; More

Obstetrics & Gynecology . 98(4):570-575, October 2001.

THE YUZPE REGIMEN OF EMERGENCY CONTRACEPTION: How LONG AFTER THE MORNING AFTER?.

Trussell, James; Ellertson, Charlotte; Rodríguez, Germén

Obstetrics & Gynecology . 88(1):150-154, July 1996.