Occupation and positions held

• Internist Endocrinologist, Department of Internal Medicine, Spaarne Gasthuis
• Head, Internal Medicine Residency Program, Spaarne Gasthuis
• Founder, Dutch Anabolic Steroid Centre of Expertise and Outpatient Clinic

Previous appointments:

• 2003-2011 internist-endocrinologist, dept of endocrinology, VU University Medical Center Amsterdam.

Academic qualifications:

• 1996 MD Erasmus University Rotterdam
• 2003 specialist accreditation in internal medicine and endocrinology (Rotterdam)
• 2006 PhD Erasmus University Rotterdam

Memberships:

• Dutch Society of Internal Medicine
• Dutch Society of Endocrinology

Research interests include:

• Pathofysiology and treatment of male hypogonadism
• Biological and medical effects of anabolic androgenic steroid use in athletes and bodybuilders
• Principle investigator of the HAARLEM study, an observational cohort study investigating side effects of androgen abuse

Publications:

• Author of more than 50 peer reviewed manuscripts
• Reviewer for multiple international scientific journals
• Speaker at national and international scientific conferences
• Lead author of the first Dutch guideline on the diagnosis and treatment of adverse effects of androgen abuse
• Co-author of a report for the Dutch Health Council concerning the extent and health effects of androgen abuse in the Netherlands