Martin J Blaser -
Enteric Diseases Branch, Bacterial Diseases Division, Bureau of Epidemiology, Atlanta, Ga. USA
Ronald J Waldman -
Enteric Diseases Branch, Bacterial Diseases Division, Bureau of Epidemiology, Atlanta, Ga. USA
Timothy Barrett -
Enteric Diseases Branch, Bacterial Diseases Division, Bureau of Epidemiology, Atlanta, Ga. USA
Arvid L Erlandson -
Department of Microbiology, Bronson Methodist Hospial, Kalamazoo, Mich. USA