Ziaka Varvara, Paraskevas Mavropoulos, Sotirios Koupidis, George Rachiotis, Ermanno Vitale, and George Dounias, “Occupational hazards among food delivery workers: a systematic review of empirical studies”, Int J Occup Saf Health, vol. 16, no. 1, pp. 171–184, Apr. 2026.