Licence: Public Domain Mark
Credit: Theodor Kocher. Photograph by L. Zumbühl, Bern. Wellcome Collection. Source: Wellcome Collection.
![no text alternative](https://iiif.wellcomecollection.org/image/M0010221/full/800%2C/0/default.jpg)
Licence: Public Domain Mark
Credit: Theodor Kocher. Photograph by L. Zumbühl, Bern. Wellcome Collection. Source: Wellcome Collection.