I'm so sorry to hear about your friends. Here's a couple of links about
TTP:<br><a href=http://www.emedicine.com/neuro/topic499.htm
target=new>http://www.emedicine.com/neuro/topic499.htm</a><br><a
href=http://health.yahoo.com/health/dc/000552/0.html
target=new>http://health.yahoo.com/health/dc/000552/0.html</a>