Jonathon Maguire, St. Michael's Hospital (IMAGE) St. Michael's Hospital Caption Giving children high doses of vitamin D doesn't appear to reduce the winter sniffles, according to a new study by Dr. Jonathon Maguire, a pediatrician at St. Michael's Hospital in Toronto. Credit Courtesy of St. Michael's Hospital Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.