COVID-19 is an emerging, rapidly evolving situation.
Get the latest public health information from CDC:

Get the latest research information from NIH:

Key Record Dates Identifier: NCT02668861
Brief Title: Effect of Oral Vitamin D3 on Chronic Rhinosinusitis Treatment in Adults With Lower Vitamin D Levels

First Submitted : January 27, 2016
First Submitted that Met QC Criteria : January 27, 2016
First Posted : January 29, 2016 (Estimate)

Last Update Submitted that Met QC Criteria : December 3, 2016
Last Update Posted : December 6, 2016 (Estimate)