There are so many fields in medicine that an editor in this field can expect to receive projects on almost any subject. But usually it is found that academic support companies try and get editors from the field that the writer is from. This way the editor can also bring subject matter expertise to his task. The writers can try and only go to those firms that have a subject matter expert in the field that they are working in. It always helps if the editor has good language skills and is a subject matter expert.