doi:10.1080/21678421.2021.1946083SA.RudnickiJA.AndrewsA.GengeC.JacksonN.LechtzinTM.MillerBM.CockroftFI.MalikL.MengJ.WeiAmyotroph Lateral Scler Frontotemporal DegenerAmyotrophic lateral sclerosis & frontotemporal degeneration