<H1>Methods</H1> <P><UL> <LI><H2>Dormant applications - February 18, 1997 </H2> </UL><UL> <LI><H2>Transition applications - March 11, 1997 </H2> </UL><UL> <LI><H2>CO2 Backpack </H2> </UL><UL> <LI><H2>25 gpa</H2> </UL></P> <P></P> <P>