Vitamin D Level in Patients with COVID-19 and Its Relationship with Severity of The Clinical Course

Assessment of Serum Vitamin D Level in Patients with COVID-19 Infection

Assessment of Serum Vitamin D and Total Calcium Levels in COVID-‎‎19 Infected Patients and Their Relation to Disease Severity

Effect of Vitamin D Supplementation on Post-COVID-19 Manifestations in Menoufia University Hospitals: A Randomized Controlled Clinical Trial

A Study of Vitamin D Supplementation to Patients with Chronic Diseases Admitted to Ain Shams University Hospital

Impact of Rapid Correction of Vitamin D Deficiency on Patients with COVID-19 Disease: A Randomized-Controlled Trial

Vitamin D Sufficiency Status in a Sample of Egyptian Patients with Different Rheumatological Diseases

Knowledge, Practices and Attitudes Regarding Vitamin D Insufficiency among Health Care Workers' Women with COVID-19

Investigation of the Clinical Outcomes of Long-Term Vitamin D Supplementation in Egyptian Type 2 Diabetes Mellitus Patients

Implications of vitamin D Deficiency on Egyptian Adults’ Health