Authors: GRIMES D VONHERTZEN H PIAGGIO G VANLOOK PFA PEREGOUDOV S VUCUREVIC M ROBERTS HE WU SC BAGSHAW SN OTUBU JA OGEDENGBE OK PRETNARDAROVEC A KIRKMAN RJ DING JH MITTAL S LEAVESLEY G AUSTIN KL CREININ M ADETORO OO GUILBERT E CHEN JK BYGDEMAN M BARTFAI G KHOMASSURIDZE A CHENG WY OYUNBILEG A SPARROW M

Citation: D. Grimes et al., RANDOMIZED CONTROLLED TRIAL OF LEVONORGESTREL VERSUS THE YUZPE REGIMEN OF COMBINED ORAL-CONTRACEPTIVES FOR EMERGENCY CONTRACEPTION, Lancet, 352(9126), 1998, pp. 428-433