50bp deletion in the promoter for superoxide dismutase 1 (SOD1) reduces SOD1 expression in vitro and may correlate with increased age of onset of sporadic amyotrophic lateral sclerosisWendy Broom, Robert H. Brown, Ghazaleh Sadri‐Vakili et al.|Amyotrophic Lateral Sclerosis|2008Cited by 32