Joel Ray, St. Michael's Hospital (IMAGE) St. Michael's Hospital Caption A father's ethnic background can influence a child's birthweight, according to a new study by Dr. Joel Ray of St. Michael's Hospital. 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.