A peer recently shared this article, as he is one of the co-authors, and I personally feel it contains vital fundamental information for those who testify as Forensic Experts.  Hope you find it helpful.

"The following material was revised from an original article, “Survival Checklist for Medical Experts,” written by Deputy District Attorney Michele McKay-McCoy, Solano County District Attorney’s Office. With her permission, it was revised for forensic experts by Deputy District Attorney Michael S. Groch, San Diego County District Attorney’s Office, and Deputy Attorney General Robert M. Morgester, California Department of Justice."

Survival Checklist for Forensic Experts (PDF)