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 a test spectrum produced by {TAIL ~ a mass spectrometer} from a serum produced from {HEAD ~ the patient} 
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 a test spectrum produced by { TAIL ~ a mass spectrometer } from a serum produced from { HEAD ~ the patient }
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