NCPD TestsEarly Evidence Indicates Vitamin D Improves Symptoms of Irritable Bowel Syndrome: Nursing Implications and Future Research OpportunitiesGastroenterology Nursing: November/December 2021 - Volume 44 - Issue 6 - p E106 doi: 10.1097/SGA.0000000000000648 Buy Metrics © 2021 Society of Gastroenterology Nurses and Associates.