Correction: Combining treatments for migraine prophylaxis: the state‑of‑the‑art - Lanfranco Pellesi; David Garcia‑Azorin; Eloisa Rubio‑Beltrán; Wook‑Seok Ha; Roberta Messina; Raffaele Ornello; Igor Petrusic; Bianca Raffaelli; Alejandro Labastida‑Ramirez; Ruth Ruscheweyh; Claudio Tana; Doga Vuralli; et al. (The Journal of Headache and Pain)