LSU sent a collection letter this week to the research foundation running its hospitals in Monroe and Shreveport, saying the foundation owes the university system $25.3 million and accusing it of using LSU like its "personal piggy bank." The Biomedical Research Foundation of Northwest Louisiana, known as BRF, took control of the two hospitals in October 2013, as part of Gov. Bobby Jindal's push to privatize most of the university-run public hospital system. In a blistering, two-page letter obtained Thursday by The Associated Press, the university says the foundation, which is operating the two hospitals as University Health, hasn't assumed the financial obligations required under its contract, despite taking over hospital management 10 months ago.