Z. M. . Qadir, A. I. Hussen, D. K. Al-seleet, H. . Kamil Zainalddin, J. Haji Saleh, and A. A. Radha, “The Relationship Between Breakfast Skipping, Circadian Rhythm Disruption, and Concentration Levels Among University Students in Erbil City, 2025-2026”, Health Innov. Rep., vol. 1, no. 3, pp. 40–49, Oct. 2025, doi: 10.64048/hir.v1n3.005.