June 2003 Extending the time limit for starting the Yuzpe regimen of emergency contraception to 120 hours
June 2003 Diagnosis and treatment of presumed STIs at Mexican pharmacies: survey results from a random sample of Mexico City pharmacy attendants
March 2003 Effectiveness of the Yuzpe regimen of emergency contraception by cycle day of intercourse: Implications for mechanism of action
December 2002 Knowledge and attitudes about the differences between emergency contraception and medical abortion among middle-class women and men of reproductive age in Mexico City
