Generalised boundary shift integral for longitudinal assessment of spinal cord atrophy. - Ferran Prados; Marcello Moccia; Aubrey Johnson; Marios C. Yiannakas; Francesco Grussu; Manuel Jorge Cardoso; Olga Ciccarelli; Sébastien Ourselin; Frederik Barkhof; Claudia A. M. Wheeler-Kingshott (NeuroImage, 2020)