![](/sites/default/files/author/photo/Merrill_Ray_M.jpg)
Ray M. Merrill was a Professor in the Department of Health Science at BYU when this was written. He worked in the Applied Research Branch at the National Cancer Institute.
- 44 views
Ray M. Merrill was a Professor in the Department of Health Science at BYU when this was written. He worked in the Applied Research Branch at the National Cancer Institute.