Dr. Pagan and other researchers say environmental and genetic factors could provide clues for diagnosis, treatments and a cure.
帕甘博士和其他研究人员说,环境和遗传因素能够提供线索,从中找到诊断、治疗和治愈的方法。
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There is no cure for ALS, and the few available treatments have limited efficacy. About 90 percent of ALS cases are sporadic and of unknown, possibly environmental, origin.