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

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

Vitamin D Level and Severity of COVID-19 Patients in North Sinai Governorate, A Clinical Prospective Study

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

Effect of Vitamin D Supplementation on Cognitive Functions, Positive and Negative Symptoms Among an Egyptian Sample of Patients with Schizophrenia

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

Effect of vitamin D supplementation on patients with acne vulgaris: An intervention study

Effect of Vitamin D3 (Cholecalciferol) Supplementation on Gastrointestinal Symptoms in Patients with Irritable Bowel Syndrome Attending El-Mahsama Family Practice Center, Ismailia

The Effectiveness of Vitamin D Supplementation in Chronic Periodontitis Patients: a Randomized Controlled Clinical Trial

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