Description  Claims  Drawing  Cited references 

US20050061802A   [0002] 
WO2003087451A2   [0003] 
GB559322A   [0006] 
US20020086204A1   [0007] 
US20010019050A1   [0008] 
WO2004097089A1   [0028] 
EP1128952B1   [0055]