O068. A 2 years prospective evaluation study on onabotulinumtoxinA 195 U in chronic migraine
Crossref DOI link: https://doi.org/10.1186/1129-2377-16-S1-A177
Published Online: 2015-09-28
Published Print: 2015-12
Update policy: https://doi.org/10.1007/springer_crossmark_policy
Negro, Andrea
D'Alonzo, Lidia
Lala, Noemi
Martelletti, Paolo
License valid from 2015-09-28