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2. Hausmanowa-Petrusewicz I., Fidzianska-Dolot A.: Clinical features of infantile and juvenile spinal muscular atrophy, in Gamstorp I, Sarnat HB (eds): Progressive Spinal Muscular Atrophies. New York , Raven, 1984, pp 31-42.
3. Pearn J.: Genetics of the spinal muscular atrophies, in Gamstorp I, Sarnat HB (eds): Progressive Spinal Muscular Atrophies. New York , Raven, 1984, pp 19-30.
4. Genetic mapping of chronic childhood-onset spinal muscular atrophy to chromosome 5q1 1.2–13.3
5. Dubowitz V., Brooke MH: Muscle Biopsy: A Modern Approach. London, WB Saunders, 1973, pp 148-167.