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Roswell Eldridge, Anne Harlan, IrvingS Cooper, Manuel Riklan: Superior Intelligence In Recessively Inherited Torsion Dystonia. In: The Lancet. Band295, Nr.7637, Januar 1970, ISSN0140-6736, S.65–67, doi:10.1016/S0140-6736(70)91848-9 (thelancet.com [abgerufen am 28. Juni 2018]).
Roswell Eldridge, Anne Harlan, IrvingS Cooper, Manuel Riklan: Superior Intelligence In Recessively Inherited Torsion Dystonia. In: The Lancet. Band295, Nr.7637, Januar 1970, ISSN0140-6736, S.65–67, doi:10.1016/S0140-6736(70)91848-9 (thelancet.com [abgerufen am 28. Juni 2018]).