Primary lateral sclerosis and the amyotrophic lateral sclerosis-frontotemporal dementia spectrum. Alzforum, 08 Jun 2018 Agarwal S, Highton-Williamson E, Caga J, Matamala JM, Dharmadasa T, Howells J, Zoing MC, Shibuya K, Geevasinga N, Vucic S…