Niwa S

No ORCID on file · 4 papers in corpus
2015
Effects of fertility drugs on cancers other than breast and gynecologic malignancies.
Fertility and sterility ·doi:10.1016/j.fertnstert.2015.06.045

ObjectiveTo examine the relationship of ovulation-stimulating drugs to risk of cancers other than breast and gynecologic malignancies.DesignRetrospective cohort study, with additional follow-up since initial report.SettingReproductive endoc…

2014
Long-term relationship of ovulation-stimulating drugs to breast cancer risk.
Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology ·doi:10.1158/1055-9965.epi-13-0996

BackgroundAlthough fertility drugs stimulate ovulation and raise estradiol levels, their effect on breast cancer risk remains unresolved.MethodsAn extended follow-up was conducted among a cohort of 12,193 women evaluated for infertility bet…

2013
Fertility drugs and endometrial cancer risk: results from an extended follow-up of a large infertility cohort.
Human reproduction (Oxford, England) ·doi:10.1093/humrep/det323

Study questionDo fertility drugs influence the subsequent risk of endometrial cancer in a manner that is independent of other risk predictors, such as parity?Summary answerIn this follow-up of a large cohort of women evaluated for infertili…

2013
Ovulation-inducing drugs and ovarian cancer risk: results from an extended follow-up of a large United States infertility cohort.
Fertility and sterility ·doi:10.1016/j.fertnstert.2013.08.008

ObjectiveTo examine the relationship of ovulation-inducing drugs and ovarian cancer.DesignRetrospective cohort study, with additional follow-up since initial report.SettingFive large reproductive endocrinology practices.Patient(s)In a retro…