Dr. Burkley was an internist and cardiologist, per the site where he is buried.
http://www.arlingtoncemetery.net/ggburkle.htm
Why is that important? Because Dr. Lattimer's qualifications to study the JFK assassination are often denigrated by Conspiracy Theorists. Lattimer served in WWII as a battlefield surgeon on the European continent, so he was very familiar with bullet wounds. After the war, Dr. Lattimer became intrigued by the Lincoln and JFK assassinations, and conducted several experiments using animal tissue or gelatin and bones to attempt to replicate the so-called 'magic bullet'. He was the first non-government medical professional to examine the autopsy photographs and radiographs of JFK. He wrote the book "KENNEDY AND LINCOLN" which was a study of both assassinations.
https://en.wikipedia.org/wiki/John_K._Lattimer
Based on his background, and knowledge, and special interest in the JFK assassination, he is much more qualified to opine on the assassination of JFK than Burkley.
So who do conspiracy theorists cite? You know the answer, it's Dr. Burkley.
Who do they denigrate? Dr. Lattimer.
Here's one such derogatory reference to Lattimer.
http://www.kenrahn.com/JFK/Bibliography/Kelin_bibliography.html
Factors in the Death of President Kennedy, by John K. Lattimer
1966. This oft-cited article was published in the Journal of the American Medical Association, and the Warren apologists love it; it's a urologist's opinion upholding the Warren Commission findings...
Hank