The Relationship Between Trees and Human Health: Evidence from the Spread of the Emerald Ash Borer. AMERICAN JOURNAL OF PREVENTIVE MEDICINE. 2013. By Geoffrey H. Donovan, David T. Butry, Yvonne L. Michael, Jeffrey P. Prestemon, Andrew M. Liebhold, Demetrios Gatziolis, Megan Y. Mao. めもしますたφ(｡_｡;)φ。