Said Al Hariri, Ahmed, and Shuruq Ali Oliwi AL Huzali. 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): 327-46. https://doi.org/10.31185/eduj.Vol2.Iss39.1415.