Estrid Hein

In 1915, she became an active member of Danske Kvinders Fredskæde (DKF), the Danish arm of the Women's International League for Peace and Freedom.

[1] The same year she joined the Scandinavian Family Law Commission where she was effective in furthering progress on women rights as spouses.

[2] In 1915, together with Thora Daugaard, Clara Tybjerg, Benny Cederfeld de Simonsen and Henni Forchhammer, she became an early member of Danske Kvinders Fredskæde, the Danish branch of the Women's International League for Peace and Freedom.

[6] The conclusion of the committee was that sterilization was justified in some cases of institutionalizations, that castration should be reserved for repeat sexual offenders, and left a lot of details of implementation to local physicians and administrators of institutions.

She also played a leading role in the League of Nations' Advisory Committee on the Fight against Trafficking in Women and Children where she was a delegate for 18 years.