Al-Sharbati, M. M., Z. A. J. Zaidan, A. Al-Hussaini, and K. Al-Khalili. “A Strange Type of Pica”. Sultan Qaboos University Medical Journal, vol. 5, no. 1, Apr. 2003, pp. 49-50, https://journals.squ.edu.om/index.php/squmj/article/view/1245.