Frans M. Helmerhorst

Leiden, ZH, Netherlands

Last Updated: 09/26/2026

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Found 39 publications

Hormonal contraceptive use after a first venous thrombotic event and the risk of recurrence in premenopausal women.

Hormonal contraceptive use after a first venous thrombotic event and the risk of recurrence in premenopausal women.

Journal: Journal of thrombosis and haemostasis : JTH

Published: October 26, 2023

Genetic variation in the first-pass metabolism of ethinylestradiol, sex hormone binding globulin levels and venous thrombosis risk.

Genetic variation in the first-pass metabolism of ethinylestradiol, sex hormone binding globulin levels and venous thrombosis risk.

Journal: European journal of internal medicine

Published: May 15, 2017

Human Extravillous Trophoblasts Penetrate Decidual Veins and Lymphatics before Remodeling Spiral Arteries during Early Pregnancy.

Human Extravillous Trophoblasts Penetrate Decidual Veins and Lymphatics before Remodeling Spiral Arteries during Early Pregnancy.

Journal: PloS one

Published: November 18, 2016

Gonadotropin-releasing hormone agonist against severe aggression in autism.

Gonadotropin-releasing hormone agonist against severe aggression in autism.

Journal: BMJ case reports

Published: September 23, 2016

Progestin-only contraceptives: effects on weight.

Progestin-only contraceptives: effects on weight.

Journal: The Cochrane database of systematic reviews

Published: August 29, 2016

Hormonal contraceptives for contraception in overweight or obese women.

Hormonal contraceptives for contraception in overweight or obese women.

Journal: The Cochrane database of systematic reviews

Published: August 19, 2016

Assisted reproductive technology and pregnancy outcomes.

Assisted reproductive technology and pregnancy outcomes.

Journal: BJOG : an international journal of obstetrics and gynaecology

Published: December 15, 2015

Combined oral contraceptives: the risk of myocardial infarction and ischemic stroke.

Combined oral contraceptives: the risk of myocardial infarction and ischemic stroke.

Journal: The Cochrane database of systematic reviews

Published: August 28, 2015

Steroidal contraceptives and bone fractures in women: evidence from observational studies.

Steroidal contraceptives and bone fractures in women: evidence from observational studies.

Journal: The Cochrane database of systematic reviews

Published: July 22, 2015

Development of the follicular basement membrane during human gametogenesis and early folliculogenesis.

Development of the follicular basement membrane during human gametogenesis and early folliculogenesis.

Journal: BMC developmental biology

Published: July 07, 2014

Combined oral contraceptives: venous thrombosis.

Combined oral contraceptives: venous thrombosis.

Journal: The Cochrane database of systematic reviews

Published: March 05, 2014

Not only randomised controlled trials, but also controlled observational studies.

Not only randomised controlled trials, but also controlled observational studies.

Journal: The European journal of contraception & reproductive health care : the official journal of the European Society of Contraception

Published: February 04, 2014

Showing 1-12 of 39

Last Updated: 09/26/2026