Kirkorowicz, J., P. Sapukotana, P. De Silva, M. Noda, J. de Oliveira, and T. Østbye. “Work-Related Stress and Substance Use As Risk Factors for Chronic Disease Among Three-Wheel Drivers in Galle, Sri Lanka: A Qualitative Study”. International Journal of Occupational Safety and Health, vol. 3, no. 2, Feb. 2014, pp. 21-24, doi:10.3126/ijosh.v3i2.7662.