PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 9519934-4 1998 In the patients with depression, 5 months of treatment with imipramine and/or nortriptyline significantly reduced EPO concentrations in the CSF (1.56+/-0.34 mU/ mL, P < 0.01). Nortriptyline 78-91 erythropoietin Homo sapiens 114-117