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US8374697B   [0002] 
CN103006343   [0002] 
WO2006043748A   [0002] 
US20030153965A   [0003] 
US5738521A   [0003]  [0046] 
US8374697B2   [0046] 
CN103006343B   [0046] 
WO2006043748A1   [0046] 
US20030153965A1   [0046]