https://123dok.net/document/zx56204q-en-fr-hereditary-spastic-paraplegias-clinical-spectrum-in-sudan-further-deciphering-of-the-molecular-bases-of-autosomal-recessive-forms-and-new-genes-emerging-paraplegies-spastiques-hereditaires-exploration-clinique-au-soudan-etudes-des-origines-moleculai.html