Franjo Grotenhermen, MD, has worked in the fields of internal medicine, surgery, and integrative medicine. Since 1994 he has been researching medical uses of hemp at the Nova Institut. He is also a member of the working group on quality of life for cancer patients at the Department of Internal Medicine at the University of Cologne.
Ethan Russo, MD, is a child and adult neurologist at Montana Neurobehavioral Specialists. He has had a lifetime interest in medicinal plants. He holds a faculty position in the Department of Pharmaceutical Sciences and is also Clinical Associate Professor in the Department of Medicine at the University of Washington.