Bruckner, T., Scheffler, R., Shen, G., Yoon, J., Chisholm, D., Morris, J., … Saxena, S. (2011). The mental health workforce gap in low- and middle-income countries: a needs-based approach. Bulletin of the World Health Organization, 89(3), 184-94. https://doi.org/10.2471/BLT.10.082784 (Original work published 2011)