Pregnant women are at increased risk for severe A influenza because they have low serum 25-hydroxyvitamin D levels

Critical Care Medicine:, September 2010 - Volume 38 - Issue 9 - p 1921
doi: 10.1097/CCM.0b013e3181e28603
Letters to the Editor
Grant, William B. PhD; Cannell, John J. MD
PMID: 20724898