The process includes obtaining a test spectrum produced by {HEAD ~ a mass spectrometer} from {TAIL ~ a serum} of a patient 
The process includes obtaining a test spectrum produced by { HEAD ~ a mass spectrometer } from { TAIL ~ a serum } of a patient
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH