Efficacy and Safety Study of Dysport® Used for Migraine Prophylaxis

University Hospital Hradec Kralove, Hradec Králové

St. Anne's Faculty Hospital, Brno

General Faculty Hospital, Prague

Medical Academy of Poznan, Poznan

Air Force Institute of Aviation Medicine, Warsaw

City Hospital of Wolomin, Wołomin

Voivodeship (Provincial) Specialist Hospital, Zgierz

Faculty Hospital Bratislava, Bratislava

Faculty Hospital, Martin