Description  Claims  Drawing  Cited references 

US84424206   [0001] 
US60923505B   [0001] 

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Naylor EW. Clin Chem   [0169] 
Clin Chem   [0169] 
Pediatr Res   [0169] 
International Journal of Mass Spectrometry and ion Processes   [0169] 
Annu. Rev. Genomics   [0178] 
Curr. Treat. Options Neurol.   [0178] 
Drugs   [0178] 
Clinical Chemistry   [0181]