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APA Citation
Allam, A., El-Husseiny, G., Khafaga, Y., Kandil, A., Gray, A., Ezzat, A., & Schultz, H. (1999). ewing's Sarcoma of the Head and Neck: A Retrospective Analysis of 24 Cases. Sarcoma, 3, 11–15. http://access.bl.uk/ark:/81055/vdc_100082257576.0x00004e