by University of Gothenburg Biomarker correlation to survival, survival analyses in clinical symptom onset and genotype groups, biomarker ratios and ALSFRS-R in ALS patients. (A) Correlation between plasma NFL and survival after symptom onset stratified by spinal and bulbar symptom onset. (B) Kaplan–Meier survival analysis for spinal onset versus bulbar onset ALS patients. (C) Correlation...