Aqahtani, T., A. Albalawi, J. Alotaibi, A. Alshareef, T. Alrasheed, H. Mirghani, I. Mirza, A. Alatawi, H. Albalawi, and M. Sheik. “Chronotype, Daytime Sleepiness, and Related Factors Effects on Skipping Classroom Among Medical Students in Tabuk ”. Sudan Journal of Medical Sciences (SJMS), Vol. 18, no. 2, June 2023, pp. 165–176, doi:10.18502/sjms.v18i2.13601.