Reply to "Spinal Cord Atrophy Is a Preclinical Marker of Progressive MS"

Bischof, Antje; Papinutto, Nico; Keshavan, Anisha; Rajesh, Anand; Kirkish, Gina; Zhang, Xinheng; Mallott, Jacob M; Asteggiano, Carlo; Sacco, Simone; Gundel, Tristan J; Zhao, Chao; Stern, William A; Caverzasi, Eduardo; Zhou, Yifan; Gomez, Refujia; Ragan, Nicholas R; Santaniello, Adam; Zhu, Alyssa H; Juwono, Jeremy; Bevan, Carolyn J; Bove, Riley M; Crabtree-Hartman, Elizabeth; Gelfand, Jeffrey M; Goodin, Douglas S; Graves, Jennifer S; Green, Ari J; Oksenberg, Jorge R; Waubant, Emmanuelle; Wilson, Michael R; Zamvil, Scott S; Cree, Bruce A; Hauser, Stephen L; Henry, Roland G