Montanares Espinoza, M., 		Vásquez Canales, G., 		Sandoval Gómez, N., 		Novoa Constanzo, D., & 		Arriagada Escobar, V.
2021 Jan 31.  Study protocol to assess sleep quality and quantity of dental students belonging to the University of Concepcion in e-learning classes during the current pandemic.. Journal of Oral Research. [Online] :