Said Al Hariri, .A. and Ali Oliwi AL Huzali , S. (2020) “Relationships, Differences, and Predicting the Level of Vitamin (D) Deficiency and the Symptoms of Mood Disorder on a Sample of Cliants of some Private Medical Laboratories in Makkah ALMokarramah City – Kingdom of Saudi Arabia”, Journal of College of Education, 2(39), pp. 327–346. doi:10.31185/eduj.Vol2.Iss39.1415.