H. Arbildo-Vega, J. Cantu-Oliva, R. Chumpitaz-Durand, J. Agüero-Alva, A. Rendón-Alvarado, and H. Vásquez-Rodrigo, “Survival rate of fixed space maintainers used in Dentistry. Systematic review and Meta-analysis.”, JOR, vol. 10, no. 6, pp. 1-10, Dec. 2021.