ScD

Sometimes they must trek across nearly half the country, said study author Elizabeth Janiak, ScD, an assistant professor at obstetrics at Brigham & Women's Hospital and Harvard Medical School.

Notes John Boice, ScD: “It doesn’t make sense to do tests twice, yet it does happen.”

The poison is in the dose, says John Boice, ScD, president of the National Council on Radiation Protection and Measurements and professor of medicine at Vanderbilt University.