ATA also has hired Citigroup and Morgan Stanley to evaluate options for refinancing or restructuring $ 175 million of 10.5 percent senior notes due in August 2004 .
It also hired Citigroup and Morgan Stanley to explore refinancing or restructuring of $ 175 million in senior notes due next year .
The rate of survival without serious brain damage is about 10 percent , said Bossaert , a professor at the University Hospital in Antwerp , Belgium .