The project description leaves a lot of detail unclear, so I may need you to message me with further details. In any case, I have both an academic background and a personal background relating to this subject. Most of my experience started after I broke my left femur at the growth plate when I was 12, requiring quite a bit of physical therapy. This is a subject that deserves someone who cares about it, not someone who will fire off an article without fact-checking for the sake of making a quick buck. I care deeply, and would handle this project with not only respect, but also with the utmost level of academic scrutiny. Send me a message and we can talk more. I should also note that the rate is negotiable, although I assume based on the range you posted that the project will be fairly deep.