Research Article Occupational exposure to extremely low-frequency magnetic fields and the risk of ALS: A systematic review and meta-analysis Anke Huss, Susan Peters, Roel Vermeulen Abstract We performed a meta-analysis to examine associations of occupational exposure to extremely-low frequency magnetic fields (ELF-MF) with amyotrophic lateral sclerosis (ALS). Epidemiologic studies were identified in EMBASE and MEDLINE, in reference […]