Starkle, N., K. G. Amoah, and M. Newman-Nartey. “Bracket Failure Among Orthodontic Patients in Ghana”. West African Journal of Orthodontics, vol. 2, no. 2, Dec. 2013, pp. 12-17, https://wajo.oauife.edu.ng/index.php/wajo/article/view/20.