The first woman member, Margarete Hilferding, joined the Society in 1910 and the following year she was joined by Tatiana Rosenthal and Sabina Spielrein who were both Russian psychiatrists and graduates of the Zürich University medical school. Prior to the completion of her studies, Spielrein had been a patient of Jung at the Burghölzli and the clinical and personal details of their relationship became the subject of an extensive correspondence between Freud and Jung. Both women would go on to make important contributions to the work of the Russian Psychoanalytic Society founded in 1910.