Ultrasonic detection of vagus, accessory, and phrenic nerve atrophy in amyotrophic lateral sclerosis: Relation to impairment and mortality. - Walter, Uwe; Sobiella, Gretlies; Prudlo, Johannes; Batchakaschvili, Michael; Böhmert, Jan; Storch, Alexander; Hermann, Andreas (European Journal of Neurology, 2024)