The world's first vaginoplasty (surgery converting male genitalia into female) was also performed by that same clinic:
https://en.wikipedia.org/wiki/Dora_Richter
Dora Richter was the first person in the world to successfully undergo treatment, at that clinic. Her operation was in two parts: removal of the testicles in 1922, and full vaginoplasty in 1931.
She survived the Holocaust too.
The surgeon who operated on her later worked for the Nazis in the eugenics program:
https://en.wikipedia.org/wiki/Erwin_Gohrbandt
History is nuts.