Shelley Niwa

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

OBJECTIVE: To examine the relationship of ovulation-stimulating drugs to risk of cancers other than breast and gynecologic malignancies. DESIGN: Retrospective cohort study, with additional follow-up since initial report. SETTING: Reproduc…

observational 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

BACKGROUND: Although fertility drugs stimulate ovulation and raise estradiol levels, their effect on breast cancer risk remains unresolved. METHODS: An extended follow-up was conducted among a cohort of 12,193 women evaluated for infertili…

observational 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 QUESTION: Do fertility drugs influence the subsequent risk of endometrial cancer in a manner that is independent of other risk predictors, such as parity? SUMMARY ANSWER: In this follow-up of a large cohort of women evaluated for inf…

observational 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

OBJECTIVE: To examine the relationship of ovulation-inducing drugs and ovarian cancer. DESIGN: Retrospective cohort study, with additional follow-up since initial report. SETTING: Five large reproductive endocrinology practices. PATIENT(…