The biodiversity hypothesis and allergic disease: world allergy organization position statement.
Haahtela T, Holgate S, Pawankar R, Akdis CA, Benjaponpitak S, Caraballo L, Demain J, Portnoy J, von Hertzen L. The biodiversity hypothesis and allergic disease: world allergy organization position statement. World Allergy Organ J. 2013 Jan 31; 6(1):3.