Fig. 1.
Study timelines. Study I: a single-limb safety and efficacy study. Study II: a case-control extended study. : time to rhEPO injection,
: time to clinical assessment, ▵: time to measure ALSFRS-R to evaluate primary outcome. ALSFRS-R: amyotrophic lateral sclerosis Functional Rating Scale-Revised, rhEPO: recombinant human erythropoietin.