When finding answers to scientific questions, I have had luck when not finding the information from a google or similar search in checking out the web pages of major University departments. Find a department of Anthropology that has a Forensic Anthropologist. They will have an email address. If you send a short, very specific question such as the one you posed, you will find that academics are usually willing to give you an answer if they have one. I have done it on several occassions. Broad questions don't fare so well because they won't have time to give you more than some sources to check out, but specific questions usually result in a speedy response with specific answers.