I have published a new article on Bulgaria and the change to blood transfusion disfellowshipping policy during the 1990's. It outlines what appears to have been perjury by the Watchtower Society, and also is another example of political involvement. It is at http://jwfacts.com/watchtower/bulgaria-blood-transfusions.php
It was quite difficult collating all the information so please let me know of any inconsistencies or errors.