Q: How to hire a medical book writer in USA?

I am looking for guidance on how to hire a professional medical book writer in the USA who can handle complex topics with accuracy and clarity. I want to understand the best approach to finding experienced book writers for hire who specialize in medical or healthcare content. Should I choose a freelance writer or work with a book writing service online that offers end to end support I am also interested in knowing what qualifications, experience, and writing process to look for when selecting a reliable book writing services provider. Any recommendations or insights on hiring the right experts?