Correction to 'Proton-driven plasma wakefield acceleration in AWAKE'. (23rd December 2019) - Gschwendtner, E.; Turner, M.; Adli, E.; Ahuja, A.; Apsimon, O.; Apsimon, R.; Bachmann, A.-M.; Batsch, F.; Bracco, C.; Braunmüller, F.; Burger, S.; Burt, G.; et al.