Elhabiby, M. I., A. M. A. Mustafa, A. H. Mohieldein, and E. M. Elnabaheen. “Copper and Magnesium Deficiency Are Associated With Osteoporosis in Southern Gaza Patients”. European Scientific Journal, ESJ, Vol. 16, no. 21, July 2020, p. 196, doi:10.19044/esj.2020.v16n21p196.