Doug Horne was Chief Analyst for Military Records with the Assassination Records Review Board. His new book ‘Inside the Assassination Records Review Board’ will be 5 volumes in size and be concerned principally with the medical coverup in the assassination.
The Mary Ferrell Foundation has more information, including a short word from the author himself.
http://www.maryferrell.org/wiki/index.php/Featured_Inside_The_ARRB_Coming_Soon