{HEAD ~ A process} of determining whether a patient with a disease or disorder will be responsive to a drug, used to treat the disease or disorder, including obtaining {TAIL ~ a test spectrum} produced by a mass spectrometer from a serum produced from the patient 
{ HEAD ~ A process } of determining whether a patient with a disease or disorder will be responsive to a drug , used to treat the disease or disorder , including obtaining { TAIL ~ a test spectrum } produced by a mass spectrometer from a serum produced from the patient
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH