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#129692. Spastic Paraplegia Foundation
Spastic Paraplegia Foundation (SPF) Home Page. The SPF is responsible for the spread of information involving upper motor neuron disorders called Hereditary Spastic Paraplegia (HSP) and Primary Lateral Sclerosis (PLS). HSP is also known as Hereditary Spastic Paraparesis, Familial Spastic Paraplegia (FSP), Familial Spastic Paraparesis, or Strumpell Lorrain.
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