演职人员
导演
埃德加·乔治·乌尔默
Himself - Managing Director of the National Tuberculosis Association
Kendall Emerson
Himself - Assistant Professor of Medicine, Cornell University Medical School
Edgar Mayer
Himself - Director of the Bureau of Laboratories, New York City Department of Health
Ralph S. Muckenfuss
Himself - Director of the Henry Phipps Institute
Esmond Ong