"Bursitis trochanterica" (https://youtu.be/P0OjxPiZ9MM) by Prof. Hilke Vorwerk (https://www.youtube.com/channel/UCpBHT7vSwpHdOQdVJ2IYdGA) can be reused under the CC BY-SA license (https://creativecommons.org/licenses/by-sa/4.0/). The original version of the graphik „Das menschliche Skelett“ by Wikipedia (https://commons.wikimedia.org/wiki/File:Human_skeleton_front_de.svg) is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported, 2.5 Generic, 2.0 Generic and 1.0 Generic license. Changes by Vorwerk: Beschriftung und Sterne.