1. The references with an asterisk are the meta-analyses or systematic reviews included in this review.
2. *Al-Azri, H., & Ratnapalan, S. (2014). Problem-based learning in continuing medical education: Review of randomized controlled trials. Canadian Family Physician,60, 157–165.
3. *Albanese, M. A., & Dast, L. (2014). Problem-based learning: Outcomes evidence from the health professions. Journal on Excellence in College Teaching,25(3&4), 239–252.
4. *Albanese, M. A., & Mitchell, S. (1993). Problem-based learning: A review of literature on its outcomes and implementation issues. Academic Medicine,68, 52–81.
5. *Azer, S. A., & Azer, D. (2015). Group interaction in problem-based learning tutorials: A systematic review. European Journal of Dental Education,19, 194–208. https://doi.org/10.1111/eje.12121.