Dutch speed skater who won three Olympic medals at the 1972 Sapporo Olympics. She won a silver and two bronzes.
She won a Junior Championship at the age of 16.
She won 16 gold medals over the course of her career.
Her daughter Boukje Keulen also had a successful skating career.
Her speed skating career ended about 30 years before American speed skater Apollo Anton Ohno excelled in the sport.