H. How

Progesterone vaginal gel for the reduction of recurrent preterm birth: primary results from a randomized, double‐blind, placebo‐controlled trial

John O’Brien, C. D. Adair, David F. Lewis et al. · Ultrasound in Obstetrics and Gynecology · 2007 · 295 citations · Full text

Medicine, Maternal Health, Obstetrics +14

Vaginal progesterone is associated with a decrease in risk for early preterm birth and improved neonatal outcome in women with a short cervix: a secondary analysis from a randomized, double‐blind, placebo‐controlled trial

E. A. De Franco, John O’Brien, C. D. Adair et al. · Ultrasound in Obstetrics and Gynecology · 2007 · 239 citations

Medicine, Maternal Health, Obstetrics +17

Effect of progesterone on cervical shortening in women at risk for preterm birth: secondary analysis from a multinational, randomized, double‐blind, placebo‐controlled trial

John O’Brien, Emily DeFranco, C. D. Adair et al. · Ultrasound in Obstetrics and Gynecology · 2009 · 82 citations · Full text

Medicine, Gynecology, Obstetrics +13

Myometrial estradiol and progesterone receptor changes in preterm and term pregnancies

H. How, Zhi Huang, Jianru Zuo et al. · Obstetrics and Gynecology · 1995 · 49 citations

Medicine, Endocrinology, Obstetrics +14