http://ajcn.nutrition.org/content/85/5/1185.full study study http://ajcn.nutrition.org/content/85/5/1185.full Histamine and histamine intolerance Maintz&Novak http://ajcn.nutrition.org/content/85/5/1185.full http://ajcn.nutrition.org/content/85/5/1185.full http://ajcn.nutrition.org/content/85/5/1185.full http://ajcn.nutrition.org/content/85/5/1185.full The American Journal of Clinical Nutrition 2007 study http://ajcn.nutrition.org/content/85/5/1185.full http://ajcn.nutrition.org/content/85/5/1185.full The American Journal of Clinical Nutrition 2007 histamine and histamine intolerance main receptor http://ajcn.nutrition.org/content/85/5/1185.full American Society for Clinical Nutrition Histamine and histamine intolerance The American Journal of Clinical Nutrition 2007 http://ajcn.nutrition.org/content/85/5/1185.full http://ajcn.nutrition.org/content/85/5/1185.full http://ajcn.nutrition.org/content/85/5/1185.full elimination diet American Society for Clinical Nutrition