Dr. Neal Barnard. Love this guy. He has written umpteen books, appeared on TEDX, helped heal the Navajo Indians in New Mexico with a vegan diet. Helped me when I reached out. I was given all the information on his migraine study to follow at my own pace. All I can say is the elimination diet was a lifesaver. Who would have thought that an apple and an orange could cause food sensitivity which ultimately leads to migraine and asthma?