Article PubMed
Journal of dental education  (2015)

An "XL" endodontics intervention for dental students required to repeat the course=> changing frustration to improved grades and attitudes.

Alcota, Marcela; Fuenzalida, Alejandra; Barrientos, Claudia; Garrido, Mauricio; Ruiz de Gauna, Pilar; González, Fermín E