Koul, R.; Al-Murshedi, F. M.; Al-Azri, F. M.; Mani, R.; Abdelrahim, R. A.; Koul, V.; Alfutaisi, A. M. Clinical Spectrum of Hereditary Spastic Paraplegia in Children : A Study of 74 Cases. Sultan Qaboos Univ Med J 2013, 13, 371-379.