Clinical presentation and natural history of infantile-onset ascending spastic paralysis from three families with an ALS2 founder variant. - Helal, Mayada; Mazaheri, Neda; Shalbafan, Bita; Malamiri, Reza Azizi; Dilaver, Nafi; Buchert, Rebecca; Mohammadiasl, Javad; Golchin, Neda; Sedaghat, Alireza; Mehrjardi, Mohammad Yahya Vahidi; Haack, Tobias B.; Riess, Olaf; et al. (Neurological Sciences, 2018)